{"id":51200,"date":"2024-10-14T18:09:02","date_gmt":"2024-10-15T01:09:02","guid":{"rendered":"https:\/\/cirasync.com\/?p=51200"},"modified":"2025-12-17T09:11:27","modified_gmt":"2025-12-17T16:11:27","slug":"offline-global-address-list","status":"publish","type":"post","link":"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/","title":{"rendered":"What is the Offline Global Address List (OAB)? [2025 Beginners Guide]"},"content":{"rendered":"\n<p>I was surprised when Piaff, our content manager, asked me to write a blog post about the offline global address list. I knew what the offline GAL was because I had heard the term but never used it.<\/p>\n\n\n\n<p>After all, we (and our customers) don\u2019t see its need because we use <a href=\"https:\/\/cirasync.com\/\">CiraSync<\/a> to sync contacts to mobile devices.<\/p>\n\n\n\n<p>So, writing this post was a new experience for me. To begin, I found little information about the offline address book, and the more I researched, the more I noticed that thousands of GAL users knew almost nothing about its offline version.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"804\" height=\"365\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Reddit-conversation-about-the-offline-global-address-list.jpg\" alt=\"Reddit conversation about the offline global address list\" class=\"wp-image-51204\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Reddit-conversation-about-the-offline-global-address-list.jpg 804w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Reddit-conversation-about-the-offline-global-address-list-480x218.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 804px, 100vw\" \/><\/figure>\n\n\n\n<p>Some even experienced technical problems with their offline GAL.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"850\" height=\"424\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Conversation-about-the-offline-global-address-list-on-Reddit.jpg\" alt=\"Conversation about the offline global address list on Reddit\" class=\"wp-image-51208\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Conversation-about-the-offline-global-address-list-on-Reddit.jpg 850w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Conversation-about-the-offline-global-address-list-on-Reddit-480x239.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 850px, 100vw\" \/><\/figure>\n\n\n\n<p>So, to ensure I could write the best article possible, I tested the online and offline GALs for six days to spot the differences. Finally, I downloaded, updated, and deleted many copies of the offline one to see how it works.<\/p>\n\n\n\n<p>Let me share my experience with you in this blog post.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Key Takeaways:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The offline global address list (OAB) is a collection of email addresses that Outlook users can access even if they\u2019re not connected to the internet.<\/li>\n\n\n\n<li>The offline GAL is updated every 8 hours. But you can speed up the sync and avoid manual updating using <a href=\"https:\/\/cirasync.com\/gal-sync\/\">CiraSync<\/a>.<\/li>\n\n\n\n<li>To export the offline GAL, open the Address Book > Right-click a contacts list >  Add to Contacts > Click File in Outlook > Account Settings > Download Address Book > Download changes since last send\/receive. > Ok.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p><\/p>\n\n\n\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\/offline-global-address-list\/#What_is_the_Offline_Global_Address_List_OAB\" >What is the Offline Global Address List (OAB)?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#How_Does_the_Offline_Global_Address_List_Work\" >How Does the Offline Global Address List Work?<\/a><\/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\/offline-global-address-list\/#Online_Global_Address_List_vs_Offline_Global_Address_List_Whats_the_Difference\" >Online Global Address List vs Offline Global Address List What\u2019s the Difference?<\/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\/offline-global-address-list\/#Pros_and_Cons_of_Using_an_Offline_Address_Book\" >Pros and Cons of Using an Offline Address Book?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#Pros\" >Pros<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#Cons\" >Cons<\/a><\/li><\/ul><\/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\/offline-global-address-list\/#How_to_Export_the_Offline_GAL\" >How to Export the Offline GAL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#How_to_Update_the_Offline_Global_Address_List\" >How to Update the Offline Global Address List<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#How_to_Delete_the_Offline_Global_Address_List\" >How to Delete the Offline Global Address List<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#Best_Practices_for_Managing_an_OAB\" >Best Practices for Managing an OAB<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#Schedule_Regular_Updates_for_the_Offline_Address_Book_OAB\" >Schedule Regular Updates for the Offline Address Book (OAB)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#Limit_the_Size_of_the_OAB\" >Limit the Size of the OAB<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/cirasync.com\/fr\/blog-articles\/offline-global-address-list\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-what-is-the-offline-global-address-list-oab\"><span class=\"ez-toc-section\" id=\"What_is_the_Offline_Global_Address_List_OAB\"><\/span>What is the Offline Global Address List (OAB)?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The offline global address list, also known as the offline address book, is a <a href=\"https:\/\/cirasync.com\/blog-articles\/global-address-list\/\">collection of email addresses<\/a> that Outlook users can access even if they\u2019re not connected to the internet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"971\" height=\"659\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Offline-Global-Address-List-OAB.png\" alt=\"Offline Global Address List (OAB)\" class=\"wp-image-51240\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Offline-Global-Address-List-OAB.png 971w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Offline-Global-Address-List-OAB-480x326.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 971px, 100vw\" \/><\/figure>\n\n\n\n<p>Unlike its online counterpart, the offline global address list requires administration \u2013 administrators decide which address lists will be available to offline users. They can change the default settings that cause a download of the OAB.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"975\" height=\"611\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Offline-Global-Address-List-Settings.png\" alt=\"Offline Global Address List Settings\" class=\"wp-image-51236\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Offline-Global-Address-List-Settings.png 975w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Offline-Global-Address-List-Settings-480x301.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 975px, 100vw\" \/><\/figure>\n\n\n\n<p>This way, you can access your essential contact information even if you\u2019re offline.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-does-the-offline-global-address-list-work\"><span class=\"ez-toc-section\" id=\"How_Does_the_Offline_Global_Address_List_Work\"><\/span>How Does the Offline Global Address List Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.microsoft.com\/en-us\/microsoft-365\/outlook\/email-and-calendar-software-microsoft-outlook\">Microsoft Outlook<\/a> automatically generates an offline address book if it\u2019s working in cached mode, which is the default configuration for Outlook.<\/p>\n\n\n\n<p>Outlook\u2019s servers will automatically receive the freshly updated offline GAL every 8 hours if you leave it running constantly. Still, it may take an additional 24 hours to update the new offline address book in the Outlook client.<\/p>\n\n\n\n<p>In some cases, Outlook will download a complete offline global address list. Outlook will do this if:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>There\u2019s no offline global address list on the computer (for example, if this is the first time you\u2019re logging into your Outlook account on this computer)<\/li>\n\n\n\n<li>There\u2019s a newer version of the OAB available<\/li>\n\n\n\n<li>OAB files are missing from the computer<\/li>\n\n\n\n<li>A previous full download fail<\/li>\n\n\n\n<li>A user has more than one Outlook profile on the same computer, and they switch between profiles.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-online-global-address-list-vs-offline-global-address-list-what-s-the-difference\"><span class=\"ez-toc-section\" id=\"Online_Global_Address_List_vs_Offline_Global_Address_List_Whats_the_Difference\"><\/span>Online Global Address List vs Offline Global Address List: What\u2019s the Difference?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The Online Global Address List (GAL) is a dynamic directory that users can access through Microsoft Exchange or Outlook. The user needs an internet connection to access the online GAL.<\/p>\n\n\n\n<p>In contrast, the Offline Global Address List is a static copy of the online GAL that users download and store on their devices. They can access it without an internet connection.<\/p>\n\n\n\n<p>The online GAL will always be more complete than its offline version. The offline version does not contain:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Group membership information<\/li>\n\n\n\n<li>Organization hierarchy information<\/li>\n\n\n\n<li>Some custom properties, such as employee ID, which is something that the administrator sets up with the online GAL.<\/li>\n<\/ul>\n\n\n\n<p>All of this information is available on the server, and since you\u2019re not connected to the internet, Outlook can\u2019t reach the server and fetch the data.<\/p>\n\n\n\n<p>An offline global address list is a simplified GAL with less information.<\/p>\n\n\n\n<p>Here is a table comparing both tools in more detail.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Feature<\/td><td>Online GAL<\/td><td>Offline GAL<\/td><\/tr><tr><td>Access<\/td><td>Accessed via Microsoft Exchange\/Outlook online<\/td><td>Stored on the user\u2019s device<\/td><\/tr><tr><td>Data Updates<\/td><td>Updates automatically in real-time<\/td><td>Static; requires manual refresh to update<\/td><\/tr><tr><td>Internet Requirement<\/td><td>Users need an internet connection<\/td><td>Users can access without an internet connection<\/td><\/tr><tr><td>Update frequency<\/td><td>Automatically updates<\/td><td>It takes up to 8 hours for the Offline Address Book to update<\/td><\/tr><tr><td>Data Availability<\/td><td>Always has the latest contact information<\/td><td>May contain outdated information if not refreshed<\/td><\/tr><tr><td>Size<\/td><td>Unlimited<\/td><td>Limited by OAB file size<\/td><\/tr><tr><td>Ideal Usage<\/td><td>Only when users need to work and are connected to the internet<\/td><td>When users need to work offline and lack a network connection<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-pros-and-cons-of-using-an-offline-address-book\"><span class=\"ez-toc-section\" id=\"Pros_and_Cons_of_Using_an_Offline_Address_Book\"><\/span>Pros and Cons of Using an Offline Address Book?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>You\u2019ll only use an offline global address list when you\u2019re disconnected from the internet. When that happens, Outlook automatically creates an \u201cOffline Storage Table\u201d file, or OST file for short.<\/p>\n\n\n\n<p>Working with an OST file and using an offline address book has pros and cons.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-pros\"><span class=\"ez-toc-section\" id=\"Pros\"><\/span>Pros:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>When you\u2019re offline, you can:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Access mailing lists, addresses, and mail items.<\/li>\n\n\n\n<li>Store mail items on local storage, including the Online Address Book and the Global Address List.<\/li>\n\n\n\n<li>Use shared folders and public folders you\u2019ve downloaded while you were online.<\/li>\n\n\n\n<li>Work without a connection and despite lags caused by poor connection.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-cons\"><span class=\"ez-toc-section\" id=\"Cons\"><\/span>Cons<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>When you\u2019re offline, you can\u2019t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Send or receive emails \u2013 this is the most significant disadvantage of using an offline global address list.<\/li>\n\n\n\n<li>Count on stability \u2013 OST files, which include your email drafts, are prone to corruption because of system crashes and viruses, which can lead to data loss.<\/li>\n\n\n\n<li>Rely on synchronized contacts because the Offline GAL doesn&rsquo;t update automatically.&nbsp;<\/li>\n\n\n\n<li>Do the exact scope of work, as oversized OST files can slow down Outlook\u2019s performance (newer versions of Outlook support OST files up to 50 gigabytes in size).<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Pros-and-Cons-of-Using-an-Offline-Address-Book-1024x1024.png\" alt=\"Pros and Cons of Using an Offline Address Book\" class=\"wp-image-51280\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Pros-and-Cons-of-Using-an-Offline-Address-Book-1024x1024.png 1024w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Pros-and-Cons-of-Using-an-Offline-Address-Book-980x980.png 980w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Pros-and-Cons-of-Using-an-Offline-Address-Book-480x480.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/figure>\n\n\n\n<p>With a GAL synchronization platform such as <a href=\"https:\/\/cirasync.com\/\">CiraSync<\/a>, users can automatically sync their <a href=\"https:\/\/cirasync.com\/support\/sync-outlook-contacts-to-iphone\/\">GAL contacts to iPhones<\/a> and <a href=\"https:\/\/cirasync.com\/blog-articles\/sync-outlook-contacts-to-android\/\">Android devices<\/a>. They can also set schedule configurations such as<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Daily<\/li>\n\n\n\n<li>Weekly<\/li>\n\n\n\n<li>Monthly and<\/li>\n\n\n\n<li>Interval.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"975\" height=\"680\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/CiraSync-Global-Address-List-Sync-Settings.png\" alt=\"CiraSync Global Address List Sync Settings\" class=\"wp-image-51232\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/CiraSync-Global-Address-List-Sync-Settings.png 975w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/CiraSync-Global-Address-List-Sync-Settings-480x335.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 975px, 100vw\" \/><\/figure>\n\n\n\n<p>There is no need to export the offline address book, as CiraSync will always push new and updated contacts.<\/p>\n\n\n\n<p>Recommended reading: <a href=\"https:\/\/cirasync.com\/blog-articles\/office-365-best-practices\/how-to-view-global-address-list-outlook\/\">How to Find the Global Address List in Outlook?<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-export-the-offline-gal\"><span class=\"ez-toc-section\" id=\"How_to_Export_the_Offline_GAL\"><\/span>How to Export the Offline GAL<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>You can <a href=\"https:\/\/cirasync.com\/blog-articles\/export-the-offline-global-address-list\/\">export the Offline Global Address List<\/a> in Microsoft Outlook in minutes.<\/p>\n\n\n\n<p>1. Open your Address Book and select the contacts list.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"971\" height=\"659\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Open-Your-Address-Book-to-Export-the-Offline-GAL.png\" alt=\"Open Your Address Book to Export the Offline GAL\" class=\"wp-image-51212\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Open-Your-Address-Book-to-Export-the-Offline-GAL.png 971w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Open-Your-Address-Book-to-Export-the-Offline-GAL-480x326.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 971px, 100vw\" \/><\/figure>\n\n\n\n<p>2. Select the contacts that you wish to export.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"973\" height=\"658\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-the-contacts-to-export-from-the-offline-address-book.png\" alt=\"Select the contacts to export from the offline address book\" class=\"wp-image-51228\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-the-contacts-to-export-from-the-offline-address-book.png 973w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-the-contacts-to-export-from-the-offline-address-book-480x325.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 973px, 100vw\" \/><\/figure>\n\n\n\n<p>4. Right-click on your selection and choose \u201cAdd to Contacts.\u201d (I would add them to a specific folder)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"969\" height=\"664\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/choose-Add-to-Contacts-in-the-offline-GAL.png\" alt=\"choose Add to Contacts in the offline GAL\" class=\"wp-image-51224\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/choose-Add-to-Contacts-in-the-offline-GAL.png 969w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/choose-Add-to-Contacts-in-the-offline-GAL-480x329.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 969px, 100vw\" \/><\/figure>\n\n\n\n<p>5. In Outlook, click \u201cFile.\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"463\" height=\"374\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-File-in-Outlook.png\" alt=\"Click File in Outlook\" class=\"wp-image-51220\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-File-in-Outlook.png 463w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-File-in-Outlook-300x242.png 300w\" sizes=\"(max-width: 463px) 100vw, 463px\" \/><\/figure>\n\n\n\n<p>6. Select \u201cAccount Settings.\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"975\" height=\"514\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-Account-Settings.png\" alt=\"Select Account Settings\" class=\"wp-image-51216\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-Account-Settings.png 975w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-Account-Settings-480x253.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 975px, 100vw\" \/><\/figure>\n\n\n\n<p>7. Click Download Address Book<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"975\" height=\"702\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-Download-Address-Book.png\" alt=\"Click Download Address Book\" class=\"wp-image-51244\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-Download-Address-Book.png 975w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-Download-Address-Book-480x346.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 975px, 100vw\" \/><\/figure>\n\n\n\n<p>8. Select \u201cOffline Global Address List\u201d from the drop-down menu. Remember to check \u201cDownload changes since last send\/receive.\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"556\" height=\"281\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Export-the-Offline-Global-Address-List-OAB.png\" alt=\"Export the Offline Global Address List (OAB)\" class=\"wp-image-51276\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Export-the-Offline-Global-Address-List-OAB.png 556w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Export-the-Offline-Global-Address-List-OAB-480x243.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 556px, 100vw\" \/><\/figure>\n\n\n\n<p>9. Select OK.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-update-the-offline-global-address-list\"><span class=\"ez-toc-section\" id=\"How_to_Update_the_Offline_Global_Address_List\"><\/span>How to Update the Offline Global Address List<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The offline GAL automatically updates once a day, but if you notice any inaccurate or outdated information, you may want to manually update the GAL data on your computer.<\/p>\n\n\n\n<p>What\u2019s the difference between exporting and updating the offline global address list?<\/p>\n\n\n\n<p>Exporting the offline GAL means downloading a copy of the Global Address List from the Exchange server to your local device (in CSV, Excel, or PST formats). On the other hand, updating the Offline Address Book (OAB) refreshes the copy you already have on your device.<\/p>\n\n\n\n<p>Updates may include new contacts, deleted contacts, or changes to existing contacts.<\/p>\n\n\n\n<p>Here&rsquo;s how you can update the Offline Global Address List.<\/p>\n\n\n\n<p>1. Go to the \u201cSend\/Receive\u201d tab<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"455\" height=\"405\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Go-to-the-Send-Receive-tab.png\" alt=\"Go to the Send Receive tab\" class=\"wp-image-51272\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Go-to-the-Send-Receive-tab.png 455w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Go-to-the-Send-Receive-tab-300x267.png 300w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><\/figure>\n\n\n\n<p>2. In the Send\/Receive Groups group, click Send\/Receive All Folders.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"975\" height=\"170\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Go-to-Send-Receive-Groups.png\" alt=\"Go to Send Receive Groups\" class=\"wp-image-51268\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Go-to-Send-Receive-Groups.png 975w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Go-to-Send-Receive-Groups-480x84.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 975px, 100vw\" \/><\/figure>\n\n\n\n<p>3. In the same group, click \u201cDownload Address Book.\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"364\" height=\"521\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-on-Download-Address-Book.png\" alt=\"Click on Download Address Book\" class=\"wp-image-51264\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-on-Download-Address-Book.png 364w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Click-on-Download-Address-Book-210x300.png 210w\" sizes=\"(max-width: 364px) 100vw, 364px\" \/><\/figure>\n\n\n\n<p>4. In the dialog box that appears, check Download changes since last Send\/Receive and click OK.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"553\" height=\"275\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/check-Download-changes-since-last-Send-Receive.png\" alt=\"check Download changes since last Send Receive\" class=\"wp-image-51260\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/check-Download-changes-since-last-Send-Receive.png 553w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/check-Download-changes-since-last-Send-Receive-480x239.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 553px, 100vw\" \/><\/figure>\n\n\n\n<p>There you go; you just updated your offline GAL. However, it&rsquo;s not an effective method because you must manually do the update.<\/p>\n\n\n\n<p>The best solution is to use a third-party tool that <a href=\"https:\/\/cirasync.com\/blog-articles\/sync-the-global-address-list-to-iphone\/\">automatically syncs the GAL to iPhones<\/a> and <a href=\"https:\/\/cirasync.com\/blog-articles\/sync-global-address-list-to-android-devices\/\">Android devices<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-delete-the-offline-global-address-list\"><span class=\"ez-toc-section\" id=\"How_to_Delete_the_Offline_Global_Address_List\"><\/span>How to Delete the Offline Global Address List<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>1. On the \u201cFile\u201d tab, click Account Settings &gt; Account Settings.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"392\" height=\"502\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/What-is-the-Offline-Global-Address-List-OAB.png\" alt=\"What is the Offline Global Address List (OAB)\" class=\"wp-image-51256\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/What-is-the-Offline-Global-Address-List-OAB.png 392w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/What-is-the-Offline-Global-Address-List-OAB-234x300.png 234w\" sizes=\"(max-width: 392px) 100vw, 392px\" \/><\/figure>\n\n\n\n<p>2. Select \u201cAddress Books.\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"975\" height=\"331\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-Address-Books.png\" alt=\"Select Address Books\" class=\"wp-image-51252\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-Address-Books.png 975w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Select-Address-Books-480x163.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 975px, 100vw\" \/><\/figure>\n\n\n\n<p>3. Click \u201cRemove.\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"975\" height=\"331\" src=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Delete-the-Offline-Global-Address-List.png\" alt=\"Delete the Offline Global Address List\" class=\"wp-image-51248\" srcset=\"https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Delete-the-Offline-Global-Address-List.png 975w, https:\/\/cirasync.com\/wp-content\/uploads\/2024\/10\/Delete-the-Offline-Global-Address-List-480x163.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 975px, 100vw\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-best-practices-for-managing-an-oab\"><span class=\"ez-toc-section\" id=\"Best_Practices_for_Managing_an_OAB\"><\/span>Best Practices for Managing an OAB<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>When managing an Offline Address Book (OAB), following some best practices can help users send and manage data efficiently.<\/p>\n\n\n\n<p>Here are some best practices for managing an OAB!<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-schedule-regular-updates-for-the-offline-address-book-oab\"><span class=\"ez-toc-section\" id=\"Schedule_Regular_Updates_for_the_Offline_Address_Book_OAB\"><\/span>Schedule Regular Updates for the Offline Address Book (OAB)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>One of the key aspects of Offline Address Book (OAB) management is ensuring it is updated regularly.<\/p>\n\n\n\n<p>By default, in Exchange, the OAB updates every eight hours. To maintain data accuracy, regularly monitoring the update process is essential. This prevents users from accessing outdated contact lists, which could disrupt internal communication.&nbsp;<\/p>\n\n\n\n<p>If necessary, administrators can manually trigger updates using PowerShell commands like Update-GlobalAddressList. This is especially useful for large organizations, where frequent onboarding of new employees and role changes occur, ensuring that the contact information stays current.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-limit-the-size-of-the-oab\"><span class=\"ez-toc-section\" id=\"Limit_the_Size_of_the_OAB\"><\/span>Limit the Size of the OAB<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>If OAB files become too large, performance may suffer, particularly over a network.<\/p>\n\n\n\n<p>Keep the OAB file size as small as possible to reduce this impact. Exclude unnecessary objects, such as distribution lists, system mailboxes, and unused attributes. It will minimize the download size, allowing quicker access to the OAB and faster updates.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1728951250494\"><strong class=\"schema-faq-question\"><strong>Why is a user not showing in the Global Address List?<\/strong><\/strong> <p class=\"schema-faq-answer\">It may take 24 hours for new users to appear in the global address list. Some users may receive the update several hours ahead of others, depending on when your exchange server refreshes its offline address book and when each Outlook client syncs.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1728951257479\"><strong class=\"schema-faq-question\"><strong>Where is the offline global address list located?<\/strong><\/strong> <p class=\"schema-faq-answer\">Outlook&rsquo;s Offline Global Address List (OAB) is stored at C:\\Users\\[your computer username]\\AppData\\Local\\Microsoft\\Outlook\\Offline Address Books.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>I was surprised when Piaff, our content manager, asked me to write a blog post about the offline global address list. I knew what the offline GAL was because I had heard the term but never used it. After all, we (and our customers) don\u2019t see its need because we use CiraSync to sync contacts [&hellip;]<\/p>\n","protected":false},"author":38,"featured_media":46654,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"page-cirablog2.php","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","_nextfly_llmd_date_locked":false,"footnotes":""},"categories":[1478],"tags":[],"ppma_author":[13535],"class_list":["post-51200","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-articles"],"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>What is the Offline Global Address List (OAB)? 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