{"id":69844,"date":"2026-03-31T09:47:06","date_gmt":"2026-03-31T16:47:06","guid":{"rendered":"https:\/\/cirasync.com\/?p=69844"},"modified":"2026-04-16T09:32:11","modified_gmt":"2026-04-16T16:32:11","slug":"ews-deprecation-public-folder-migration-cirasync","status":"publish","type":"post","link":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/","title":{"rendered":"An Important Update for Customers Using Public Folders in Exchange Online"},"content":{"rendered":"<p><span data-contrast=\"auto\">While Public Folders will remain accessible to users through Outlook, Microsoft will begin deprecating EWS access for third\u2011party applications in October 2026. As a result, applications like CiraSync Cloud will no longer be able to read or sync data that resides directly in Public Folders.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">To ensure uninterrupted contact and calendar synchronization, Public Folder\u2013based sync tunnels must be migrated to a new, supported source.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#What_Is_Changing_%E2%80%94_and_Why_It_Matters\" >What Is Changing \u2014 and Why It Matters\u00a0<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#Public_Folder_Access_Is_Changing_for_Third%E2%80%91Party_Apps\" >Public Folder Access Is Changing for Third\u2011Party Apps\u00a0<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#The_Recommended_Solution\" >The Recommended Solution\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#Automatic_Migration_No_Manual_Cleanup_Required\" >Automatic Migration,\u00a0No Manual Cleanup Required\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#What_Customers_Need_to_Do\" >What Customers Need to Do\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#Outcome_After_Migration\" >Outcome After Migration\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#Need_Assistance\" >Need Assistance?\u00a0<\/a><\/li><\/ul><\/nav><\/div>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"What_Is_Changing_%E2%80%94_and_Why_It_Matters\"><\/span><b><span data-contrast=\"none\">What Is Changing \u2014 and Why It Matters<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;201341983&quot;:0,&quot;335559738&quot;:261,&quot;335559739&quot;:261,&quot;335559740&quot;:300}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 aria-level=\"3\"><span class=\"ez-toc-section\" id=\"Public_Folder_Access_Is_Changing_for_Third%E2%80%91Party_Apps\"><\/span><b><span data-contrast=\"none\">Public Folder Access Is Changing for Third\u2011Party Apps<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;201341983&quot;:0,&quot;335559738&quot;:246,&quot;335559739&quot;:246,&quot;335559740&quot;:300}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Users will continue to see and access Public Folders in Outlook.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">However, starting\u00a0<\/span><b><span data-contrast=\"auto\">October 2026<\/span><\/b><span data-contrast=\"auto\">, third\u2011party applications will lose access to Public Folders in Exchange Online due to Microsoft EWS deprecation.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"1\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">This means CiraSync Cloud will no longer be able to sync contact or calendar data directly from Public Folders.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Without action, sync tunnels that rely on Public Folders will eventually stop functioning.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"The_Recommended_Solution\"><\/span><b><span data-contrast=\"none\">The Recommended Solution<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;201341983&quot;:0,&quot;335559738&quot;:261,&quot;335559739&quot;:261,&quot;335559740&quot;:300}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">To continue syncing data that currently lives in Public Folders in Exchange Online, the data must be migrated to a supported mailbox source.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">We recommend migrating your Public Folder data to:<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">\u2705\u00a0<\/span><b><span data-contrast=\"auto\">A Shared Mailbox<\/span><\/b><span data-contrast=\"auto\">\u00a0(most common)<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">\u2705\u00a0<\/span><b><span data-contrast=\"auto\">A User Mailbox<\/span><\/b><span data-contrast=\"auto\">\u00a0(if preferred for your configuration)<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Both options are fully supported by Microsoft Graph and ensure long\u2011term compatibility.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"Automatic_Migration_No_Manual_Cleanup_Required\"><\/span><b><span data-contrast=\"none\">Automatic Migration,\u00a0No Manual Cleanup Required<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;201341983&quot;:0,&quot;335559738&quot;:261,&quot;335559739&quot;:261,&quot;335559740&quot;:300}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">To make this transition as smooth as possible, CiraSync has designed a backend migration tool that:<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"3\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">\u2705 Automatically migrates contact and calendar data from the Public Folder into the new mailbox source<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"3\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">\u2705 Updates your existing sync tunnel configuration to use the new source<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"3\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">\u2705 Preserves data consistency<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"3\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">\u2705 Prevents duplication<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"3\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">\u2705 Requires no manual export, re\u2011import, or reconfiguration by you<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">The migration runs safely in the background. Migration time may vary depending on the amount of data being transferred.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"What_Customers_Need_to_Do\"><\/span><b><span data-contrast=\"none\">What Customers Need to Do<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;201341983&quot;:0,&quot;335559738&quot;:261,&quot;335559739&quot;:261,&quot;335559740&quot;:300}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">Because this change involves backend changes to your sync tunnels, it must be completed by CiraSync Support.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">To get started, please\u00a0<\/span><a href=\"mailto:Help@CiraSync.com\"><span data-contrast=\"none\">contact Support<\/span><\/a><span data-contrast=\"auto\">\u00a0and provide:<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">The\u00a0<\/span><b><span data-contrast=\"auto\">Shared Mailbox or User Mailbox<\/span><\/b><span data-contrast=\"auto\">\u00a0you want to use as the new source<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"4\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">The\u00a0<\/span><b><span data-contrast=\"auto\">folder name<\/span><\/b><span data-contrast=\"auto\">\u00a0where the migrated contacts or calendars should live<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Our team will take care of the rest.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"Outcome_After_Migration\"><\/span><b><span data-contrast=\"none\">Outcome After Migration<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;201341983&quot;:0,&quot;335559738&quot;:261,&quot;335559739&quot;:261,&quot;335559740&quot;:300}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">Once migration is complete:<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"5\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Your data will live in a Graph\u2011supported mailbox<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"5\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Your sync tunnels will continue running without interruption<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"5\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Your environment will be fully prepared for EWS deprecation<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-leveltext=\"\u00b7\" data-font=\"Symbol\" data-listid=\"5\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\u00b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">No data duplication or loss will occur<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559685&quot;:720,&quot;335559737&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:300,&quot;335559991&quot;:360}\">\u00a0<\/span><\/li>\n<\/ul>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"Need_Assistance\"><\/span><b><span data-contrast=\"none\">Need Assistance?<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;201341983&quot;:0,&quot;335559738&quot;:261,&quot;335559739&quot;:261,&quot;335559740&quot;:300}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p aria-level=\"2\"><span data-contrast=\"auto\">Talk to a human at\u00a0<\/span><a href=\"https:\/\/outlook.office.com\/book\/CustomerSuccessTeam@cirasync.com\/?ismsaljsauthenabled\"><b><span data-contrast=\"none\">CiraSync Support<\/span><\/b><\/a> to schedule your migration, <span data-contrast=\"auto\">or discuss the best mailbox option for your environment. We strongly recommend completing this transition well ahead of October 2026 to avoid any disruption.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:210,&quot;335559739&quot;:210,&quot;335559740&quot;:300}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>While Public Folders will remain accessible to users through Outlook, Microsoft will begin deprecating EWS access for third\u2011party applications in October 2026. As a result, applications like CiraSync Cloud will no longer be able to read or sync data that resides directly in Public Folders.\u00a0 To ensure uninterrupted contact and calendar synchronization, Public Folder\u2013based sync [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":46654,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_nextfly_llmd_date_locked":false,"footnotes":""},"categories":[1478,13550,3305],"tags":[13582,13570,13571,55],"ppma_author":[13546],"class_list":["post-69844","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-articles","category-featured-articles","category-public-folders","tag-cirasync-cloud","tag-ews","tag-exchange-web-services","tag-public-folders"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>An Important Update for Customers Using Public Folders in Exchange Online &#8212; CiraSync<\/title>\n<meta name=\"description\" content=\"Microsoft is ending EWS access to Public Folders in Oct 2026. Learn how to migrate Public Folder sync tunnels to supported mailboxes with CiraSync.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"An Important Update for Customers Using Public Folders in Exchange Online\" \/>\n<meta property=\"og:description\" content=\"Microsoft is ending EWS access to Public Folders in Oct 2026. Learn how to migrate Public Folder sync tunnels to supported mailboxes with CiraSync.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/\" \/>\n<meta property=\"og:site_name\" content=\"CiraSync\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/CiraSync\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-31T16:47:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-16T16:32:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cirasync.com\/wp-content\/uploads\/2019\/04\/Cirasync_share_1200x630-01.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Ema Zulic\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@CiraSync\" \/>\n<meta name=\"twitter:site\" content=\"@CiraSync\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ema Zulic\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/\"},\"author\":{\"name\":\"Ema Zulic\",\"@id\":\"https:\/\/cirasync.com\/fr\/#\/schema\/person\/a179dfe101e83de2d1e79161e39e58d0\"},\"headline\":\"An Important Update for Customers Using Public Folders in Exchange Online\",\"datePublished\":\"2026-03-31T16:47:06+00:00\",\"dateModified\":\"2026-04-16T16:32:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/\"},\"wordCount\":436,\"publisher\":{\"@id\":\"https:\/\/cirasync.com\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/05\/CiraSync-Blog-1080x630-Light.jpg\",\"keywords\":[\"CiraSync Cloud\",\"EWS\",\"Exchange Web Services\",\"Public Folders\"],\"articleSection\":[\"Blog Articles\",\"Featured\",\"Public Folders\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/\",\"url\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/\",\"name\":\"An Important Update for Customers Using Public Folders in Exchange Online &#8212; CiraSync\",\"isPartOf\":{\"@id\":\"https:\/\/cirasync.com\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/05\/CiraSync-Blog-1080x630-Light.jpg\",\"datePublished\":\"2026-03-31T16:47:06+00:00\",\"dateModified\":\"2026-04-16T16:32:11+00:00\",\"description\":\"Microsoft is ending EWS access to Public Folders in Oct 2026. Learn how to migrate Public Folder sync tunnels to supported mailboxes with CiraSync.\",\"breadcrumb\":{\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#primaryimage\",\"url\":\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/05\/CiraSync-Blog-1080x630-Light.jpg\",\"contentUrl\":\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/05\/CiraSync-Blog-1080x630-Light.jpg\",\"width\":1080,\"height\":630,\"caption\":\"CiraSync Blog\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/cirasync.com\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"An Important Update for Customers Using Public Folders in Exchange Online\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cirasync.com\/fr\/#website\",\"url\":\"https:\/\/cirasync.com\/fr\/\",\"name\":\"CiraSync\",\"description\":\"Sync the Office 365 GAL, public folders and calendars to smartphones.\",\"publisher\":{\"@id\":\"https:\/\/cirasync.com\/fr\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/cirasync.com\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/cirasync.com\/fr\/#organization\",\"name\":\"CiraSync\",\"url\":\"https:\/\/cirasync.com\/fr\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/cirasync.com\/fr\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/cirasync.com\/wp-content\/uploads\/2019\/07\/CiraSync-Logo-.png\",\"contentUrl\":\"https:\/\/cirasync.com\/wp-content\/uploads\/2019\/07\/CiraSync-Logo-.png\",\"width\":1200,\"height\":671,\"caption\":\"CiraSync\"},\"image\":{\"@id\":\"https:\/\/cirasync.com\/fr\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/CiraSync\/\",\"https:\/\/x.com\/CiraSync\",\"https:\/\/www.linkedin.com\/company\/cira-apps-limited\",\"https:\/\/www.youtube.com\/channel\/UCdFkOfXlRAWRadzGit3jJZA\/videos\"],\"description\":\"CiraSync automatically syncs CRM, contact & calendar data from M365, Exchange & many CRMs to every smartphone.\",\"email\":\"support@cirasync.com\",\"telephone\":\"1 (202) 747 0888\",\"legalName\":\"CiraSync\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/cirasync.com\/fr\/#\/schema\/person\/a179dfe101e83de2d1e79161e39e58d0\",\"name\":\"Ema Zulic\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/cirasync.com\/fr\/#\/schema\/person\/image\/6908e25f5b970f7afc565f7c922b5564\",\"url\":\"https:\/\/cirasync.com\/wp-content\/uploads\/2026\/01\/Ema-Zulic.jpg\",\"contentUrl\":\"https:\/\/cirasync.com\/wp-content\/uploads\/2026\/01\/Ema-Zulic.jpg\",\"caption\":\"Ema Zulic\"},\"description\":\"Ema Zulic is the Vice President of Product Management and Customer Support at Cira Apps Ltd, where she drives product strategy, customer experience, and global support operations. With over 10 years of SaaS support expertise and more than 20 years of overall customer support leadership, Ema is blending deep technical insight with a passion for building high\u2011performing, customer\u2011centric teams. Her work focuses on delivering intuitive products, refining support processes, and creating seamless experiences for enterprise organizations. Outside of her leadership role, Ema shares practical, real\u2011world guidance to help companies strengthen their support models, improve operational efficiency, and elevate the customer journey.\",\"url\":\"https:\/\/cirasync.com\/fr\/author\/ema-zulic\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"An Important Update for Customers Using Public Folders in Exchange Online &#8212; CiraSync","description":"Microsoft is ending EWS access to Public Folders in Oct 2026. Learn how to migrate Public Folder sync tunnels to supported mailboxes with CiraSync.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/","og_locale":"fr_FR","og_type":"article","og_title":"An Important Update for Customers Using Public Folders in Exchange Online","og_description":"Microsoft is ending EWS access to Public Folders in Oct 2026. Learn how to migrate Public Folder sync tunnels to supported mailboxes with CiraSync.","og_url":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/","og_site_name":"CiraSync","article_publisher":"https:\/\/www.facebook.com\/CiraSync\/","article_published_time":"2026-03-31T16:47:06+00:00","article_modified_time":"2026-04-16T16:32:11+00:00","og_image":[{"width":1200,"height":630,"url":"https:\/\/cirasync.com\/wp-content\/uploads\/2019\/04\/Cirasync_share_1200x630-01.png","type":"image\/png"}],"author":"Ema Zulic","twitter_card":"summary_large_image","twitter_creator":"@CiraSync","twitter_site":"@CiraSync","twitter_misc":{"\u00c9crit par":"Ema Zulic","Dur\u00e9e de lecture estim\u00e9e":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#article","isPartOf":{"@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/"},"author":{"name":"Ema Zulic","@id":"https:\/\/cirasync.com\/fr\/#\/schema\/person\/a179dfe101e83de2d1e79161e39e58d0"},"headline":"An Important Update for Customers Using Public Folders in Exchange Online","datePublished":"2026-03-31T16:47:06+00:00","dateModified":"2026-04-16T16:32:11+00:00","mainEntityOfPage":{"@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/"},"wordCount":436,"publisher":{"@id":"https:\/\/cirasync.com\/fr\/#organization"},"image":{"@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#primaryimage"},"thumbnailUrl":"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/05\/CiraSync-Blog-1080x630-Light.jpg","keywords":["CiraSync Cloud","EWS","Exchange Web Services","Public Folders"],"articleSection":["Blog Articles","Featured","Public Folders"],"inLanguage":"fr-FR"},{"@type":"WebPage","@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/","url":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/","name":"An Important Update for Customers Using Public Folders in Exchange Online &#8212; CiraSync","isPartOf":{"@id":"https:\/\/cirasync.com\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#primaryimage"},"image":{"@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#primaryimage"},"thumbnailUrl":"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/05\/CiraSync-Blog-1080x630-Light.jpg","datePublished":"2026-03-31T16:47:06+00:00","dateModified":"2026-04-16T16:32:11+00:00","description":"Microsoft is ending EWS access to Public Folders in Oct 2026. Learn how to migrate Public Folder sync tunnels to supported mailboxes with CiraSync.","breadcrumb":{"@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#primaryimage","url":"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/05\/CiraSync-Blog-1080x630-Light.jpg","contentUrl":"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/05\/CiraSync-Blog-1080x630-Light.jpg","width":1080,"height":630,"caption":"CiraSync Blog"},{"@type":"BreadcrumbList","@id":"https:\/\/cirasync.com\/fr\/blog-articles\/ews-deprecation-public-folder-migration-cirasync\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/cirasync.com\/fr\/"},{"@type":"ListItem","position":2,"name":"An Important Update for Customers Using Public Folders in Exchange Online"}]},{"@type":"WebSite","@id":"https:\/\/cirasync.com\/fr\/#website","url":"https:\/\/cirasync.com\/fr\/","name":"CiraSync","description":"Sync the Office 365 GAL, public folders and calendars to smartphones.","publisher":{"@id":"https:\/\/cirasync.com\/fr\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/cirasync.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/cirasync.com\/fr\/#organization","name":"CiraSync","url":"https:\/\/cirasync.com\/fr\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/cirasync.com\/fr\/#\/schema\/logo\/image\/","url":"https:\/\/cirasync.com\/wp-content\/uploads\/2019\/07\/CiraSync-Logo-.png","contentUrl":"https:\/\/cirasync.com\/wp-content\/uploads\/2019\/07\/CiraSync-Logo-.png","width":1200,"height":671,"caption":"CiraSync"},"image":{"@id":"https:\/\/cirasync.com\/fr\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/CiraSync\/","https:\/\/x.com\/CiraSync","https:\/\/www.linkedin.com\/company\/cira-apps-limited","https:\/\/www.youtube.com\/channel\/UCdFkOfXlRAWRadzGit3jJZA\/videos"],"description":"CiraSync automatically syncs CRM, contact & calendar data from M365, Exchange & many CRMs to every smartphone.","email":"support@cirasync.com","telephone":"1 (202) 747 0888","legalName":"CiraSync"},{"@type":"Person","@id":"https:\/\/cirasync.com\/fr\/#\/schema\/person\/a179dfe101e83de2d1e79161e39e58d0","name":"Ema Zulic","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/cirasync.com\/fr\/#\/schema\/person\/image\/6908e25f5b970f7afc565f7c922b5564","url":"https:\/\/cirasync.com\/wp-content\/uploads\/2026\/01\/Ema-Zulic.jpg","contentUrl":"https:\/\/cirasync.com\/wp-content\/uploads\/2026\/01\/Ema-Zulic.jpg","caption":"Ema Zulic"},"description":"Ema Zulic is the Vice President of Product Management and Customer Support at Cira Apps Ltd, where she drives product strategy, customer experience, and global support operations. With over 10 years of SaaS support expertise and more than 20 years of overall customer support leadership, Ema is blending deep technical insight with a passion for building high\u2011performing, customer\u2011centric teams. Her work focuses on delivering intuitive products, refining support processes, and creating seamless experiences for enterprise organizations. Outside of her leadership role, Ema shares practical, real\u2011world guidance to help companies strengthen their support models, improve operational efficiency, and elevate the customer journey.","url":"https:\/\/cirasync.com\/fr\/author\/ema-zulic\/"}]}},"authors":[{"term_id":13546,"user_id":12,"is_guest":0,"slug":"ema-zulic","display_name":"Ema Zulic","avatar_url":{"url":"https:\/\/cirasync.com\/wp-content\/uploads\/2026\/01\/Ema-Zulic.jpg","url2x":"https:\/\/cirasync.com\/wp-content\/uploads\/2026\/01\/Ema-Zulic.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/posts\/69844","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/comments?post=69844"}],"version-history":[{"count":0,"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/posts\/69844\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/media\/46654"}],"wp:attachment":[{"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/media?parent=69844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/categories?post=69844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/tags?post=69844"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/cirasync.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=69844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}