{"id":22152,"date":"2026-06-24T12:36:47","date_gmt":"2026-06-24T12:36:47","guid":{"rendered":"https:\/\/www.sysinfotools.com\/blog\/?p=22152"},"modified":"2026-06-24T12:59:30","modified_gmt":"2026-06-24T12:59:30","slug":"migrate-exchange-public-folders-to-microsoft-365","status":"publish","type":"post","link":"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/","title":{"rendered":"Migrate Exchange Online Public Folders to Microsoft 365 in 2026"},"content":{"rendered":"\n<div class=\"p-4 mb-4\" style=\"border: 2px solid #005EFF; border-radius: 30px;\">\n<p style=\"text-align: center;\"><em><span style=\"font-weight: 400;\">\u201cMicrosoft Graph API doesn\u2019t support public folders, and Microsoft is soon blocking Exchange requests in Exchange Online. This means the backup of public folder emails, contacts, and calendars will soon stop. Amidst all of it, how can I preserve the sync structures and the entire dataset before losing complete access? The native batch migration always halts around 95%, and timeouts appear more frequently. Is there any solution that ensures no downtime &amp; data security quickly and reliably?\u201d<\/span><\/em><\/p>\n<\/div>\n\n\n\n<div class=\"block_sum\">\n<p>Public Folders have remained a key component of Microsoft communications, holding shared mail, project archives, workflows, etc. But with the acceleration of Microsoft 365 adoption in 2026, users are ready to migrate Exchange Online Public Folders to Microsoft 365. Whatever the reason may be for this migration, the real challenge is that the public folders are treated differently from the primary. They introduce several complexities and therefore need a special migration solution, either free or like a <strong>SysInfo <\/strong><a href=\"https:\/\/www.sysinfotools.com\/office365-backup.php\" target=\"_blank\"><strong>Office 365 Backup Tool<\/strong><\/a> for smart and secure migrations.<\/p>\n<div class=\"blog-btn\">\n<ul id=\"db-btn-container\" class=\"nav nav-tabs mt-4\" role=\"tablist\">\n<li class=\"nav-item\"><a id=\"windows-tab\" class=\"nav-link active\" role=\"tab\" href=\"#windows\" data-toggle=\"tab\" aria-controls=\"windows\" aria-selected=\"true\"><i class=\"icon-windows\"><\/i> Windows<\/a><\/li>\n<li class=\"nav-item\"><a id=\"mac-tab\" class=\"nav-link\" role=\"tab\" href=\"#mac\" data-toggle=\"tab\" aria-controls=\"mac\" aria-selected=\"false\"><i class=\"icon-apple\"><\/i> Mac<\/a><\/li>\n<\/ul>\n<div id=\"db-btn-containerContent\" class=\"tab-content my-2\">\n<div id=\"windows\" class=\"tab-pane fade active show\" role=\"tabpanel\" aria-labelledby=\"windows-tab\"><a class=\"sum-d-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/Sysinfo-Office-365-Backup-Tool_win.exe\"><i class=\"icon-windows\"><\/i> Download<\/a> <a class=\"sum-b-btn\" href=\"https:\/\/www.sysinfotools.com\/buynow\/office365-backup.php\" target=\"_blank\" rel=\"noopener\"><i class=\"icon icon-basket\"><\/i> Buy Now<\/a><\/div>\n<div id=\"mac\" class=\"tab-pane fade\" role=\"tabpanel\" aria-labelledby=\"mac-tab\"><a class=\"sum-d-btn\" href=\"https:\/\/www.sysinfotools.com\/demo-version\/Sysinfo-Office-365-Backup-Tool-mac.dmg\"><i class=\"icon-apple\"><\/i> Download<\/a> <a class=\"sum-b-btn\" href=\"https:\/\/www.sysinfotools.com\/buynow\/mac-office365-backup.php\" target=\"_blank\" rel=\"noopener\"><i class=\"icon icon-basket\"><\/i> Buy Now<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<div class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/div>\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:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#Enterprise_Benefits_of_Exchange_Online_Public_Folder_Migration\" >Enterprise Benefits of Exchange Online Public Folder Migration<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#All_About_Move_Exchange_Public_Folders_to_Office_365\" >All About Move Exchange Public Folders to Office 365<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#Migrate_Exchange_Online_Public_Folders_to_Microsoft_365_Challenges\" >Migrate Exchange Online Public Folders to Microsoft 365 Challenges&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#Prerequisites_to_Migrate_Public_Folders_to_Microsoft_365\" >Prerequisites to Migrate Public Folders to Microsoft 365<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#Free_Migrate_Exchange_Online_Public_Folders_to_Microsoft_365\" >Free Migrate Exchange Online Public Folders to Microsoft 365<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#Migrate_Exchange_Online_Public_Folders_to_Microsoft_365\" >Migrate Exchange Online Public Folders to Microsoft 365<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#Ending_Remarks\" >Ending Remarks&nbsp;<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Enterprise_Benefits_of_Exchange_Online_Public_Folder_Migration\"><\/span>Enterprise Benefits of Exchange Online Public Folder Migration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Public folders are great, but modern organizations require a platform that provides collaboration and convenience. The common driving factors for the migration include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Moving the contents of the public folders across tenants during M&amp;A, restructuring, etc.&nbsp;<\/li>\n\n\n\n<li>Consolidating multiple environments of large enterprises into one account for compliance and easy management.&nbsp;<\/li>\n\n\n\n<li>With public folder data migration, organizations can audit data, use security, and implement modern retention policies.&nbsp;<\/li>\n\n\n\n<li>Shared content from legacy Public folders will be migrated to Teams and Microsoft Groups with ease.&nbsp;<\/li>\n\n\n\n<li>Will help preserve the sensitive and business-critical information for the long run.&nbsp;<\/li>\n\n\n\n<li>Centralized administration and control over the data with high security and minimal downtime.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"All_About_Move_Exchange_Public_Folders_to_Office_365\"><\/span>All About Move Exchange Public Folders to Office 365<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A typical migration of Exchange Public folders comprises:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hierarchy and mail-enabled folders&nbsp;<\/li>\n\n\n\n<li>Messages, attachments, and folder permissions<\/li>\n\n\n\n<li>Contacts, calendars, and threads&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>But this becomes difficult to handle when thousands of nested folders and subfolders, multiple business units, and large datasets are involved. This results in complexities and issues.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Migrate_Exchange_Online_Public_Folders_to_Microsoft_365_Challenges\"><\/span>Migrate Exchange Online Public Folders to Microsoft 365 Challenges&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The main problem of the migration starts when the following factors are left unattended:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Years of accumulated public folder data&nbsp;<\/li>\n\n\n\n<li>Deeply nested folders with duplicate structures&nbsp;<\/li>\n\n\n\n<li>Inconsistent naming and incorrect mapping&nbsp;<\/li>\n\n\n\n<li>Validation of the access controls and user permissions&nbsp;<\/li>\n\n\n\n<li>Mapped group memberships&nbsp;<\/li>\n\n\n\n<li>Duplicate emails, attachments, or folder content&nbsp;<\/li>\n\n\n\n<li>Large content volumes with long migration windows&nbsp;<\/li>\n\n\n\n<li>Increased bandwidth and extended volume<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Prerequisites_to_Migrate_Public_Folders_to_Microsoft_365\"><\/span>Prerequisites to Migrate Public Folders to Microsoft 365<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Before initiating the migration, it is very necessary to understand and fulfill all the requirements for migration. These are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Analyze the size and number of public folders; keep it upto 25 GB<\/li>\n\n\n\n<li>Choose to migrate all folders at once or implement a structured approach&nbsp;<\/li>\n\n\n\n<li>Check the internet bandwidth and network configurations&nbsp;<\/li>\n\n\n\n<li>Relocate public folders to the public\/shared mailbox on the target account<\/li>\n\n\n\n<li>Maintain a backup of the public folder and notify users of the downtime<\/li>\n\n\n\n<li>Update your Exchange server versions and licences&nbsp;<\/li>\n\n\n\n<li>The admin account must have the ServerManagement Role on the Exchange<\/li>\n\n\n\n<li>Allow ApplicationImpersonation permissions to the admin account&nbsp;<\/li>\n\n\n\n<li>Complete admin permissions for all public folders to be migrated&nbsp;<\/li>\n\n\n\n<li>If you have an Exchange hybrid environment, first save data offline in the EDB file<\/li>\n\n\n\n<li>Ensure no orphaned or duplicate public folder mail objects are present in Active Directory<\/li>\n\n\n\n<li>Verify SMTP email addresses for the public folders in Active Directory and Office 365 Exchange match<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Free_Migrate_Exchange_Online_Public_Folders_to_Microsoft_365\"><\/span>Free Migrate Exchange Online Public Folders to Microsoft 365<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Native migration solutions require technical proficiency for the migration of the entire dataset. The method you can follow is discussed below:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>First, download <strong>Microsoft Exchange Public Folder Migration Scripts.<\/strong>\u00a0<\/li>\n\n\n\n<li>Prepare the<strong> .ps1 files<\/strong> and <strong>CSV mapping<\/strong> for source folders and size.\u00a0<\/li>\n\n\n\n<li>Next, check if any existing Public Folder migration requests are present: <strong>Get-MigrationBatch | ?{$_.MigrationType.ToString() -eq &#8220;PublicFolder1&#8221;}<\/strong><\/li>\n<\/ol>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li>Then, remove failed or previous migration batches and check if the public folder resides:<\/li>\n<\/ol>\n\n\n\n<p><strong>Remove-MigrationBatch &lt;BatchMailboxName&gt; -Confirm:$false<\/strong><\/p>\n\n\n\n<p><strong>Get-Mailbox -PublicFolder<\/strong><\/p>\n\n\n\n<p><strong>Get-PublicFolder -Recurse<\/strong><\/p>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li>Further, run the Exchange Management Script from the Shell:<\/li>\n<\/ol>\n\n\n\n<p><strong>.\\Sync-ModernMailPublicFolders.ps1 -CsvSummaryFile:sync_summary.csv<\/strong><\/p>\n\n\n\n<ol start=\"6\" class=\"wp-block-list\">\n<li>Afterward, store the source admin credentials and specify the MRS proxy endpoint: <strong>$Source_Credential = Get-Credential PUBLICDOMAIN\\PFAdmin<\/strong><\/li>\n<\/ol>\n\n\n\n<ol start=\"7\" class=\"wp-block-list\">\n<li>Now, retrieve your public folder hierarchy mailbox GUID with: <strong>(Get-OrganizationConfig).RootPublicFolderMailboxes.HierarchyMailboxesGuid.GUID<\/strong><\/li>\n<\/ol>\n\n\n\n<ol start=\"8\" class=\"wp-block-list\">\n<li>Later, from Exchange Admin Center, using PowerShell, run the given <strong>New-MigrationBatch <\/strong>command.<\/li>\n<\/ol>\n\n\n\n<ol start=\"9\" class=\"wp-block-list\">\n<li>Temporarily restrict the user access on the source server and proceed to check for active move requests:<\/li>\n<\/ol>\n\n\n\n<p><strong>Get-MoveRequest<\/strong><\/p>\n\n\n\n<p><strong>Get-PublicFolderMoveRequest<\/strong><\/p>\n\n\n\n<ol start=\"10\" class=\"wp-block-list\">\n<li>Finally, complete the migration batch and validate your testing with the cmdlet:<\/li>\n<\/ol>\n\n\n\n<p><strong>Complete-MigrationBatch PublicFolderMigration<\/strong><\/p>\n\n\n\n<p><strong>Set-Mailboxes -Identity testuser@company.com `<\/strong><\/p>\n\n\n\n<p><strong>-DefaultPublicFolderMailboxes PFMailbox01<\/strong><\/p>\n\n\n\n<ol start=\"11\" class=\"wp-block-list\">\n<li>Once done, unlock your public folders within M365 using the command:<\/li>\n<\/ol>\n\n\n\n<p><strong>Set-OrganizationConfig `<\/strong><\/p>\n\n\n\n<p><strong>-RemotePublicFolderMailboxes $Null `<\/strong><\/p>\n\n\n\n<p><strong>-PublicFoldersEnabled Local<\/strong><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Shortcomings of the Manual Method&nbsp;<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Migrate only upto 5 TB of data and 100 Public Folder mailboxes.&nbsp;<\/li>\n\n\n\n<li>Microsoft scripts are used instead of PST Exports&nbsp;<\/li>\n\n\n\n<li>Time-consuming process with limited visibility&nbsp;<\/li>\n\n\n\n<li>Risk of mismatched permissions and duplicacy&nbsp;<\/li>\n\n\n\n<li>Too technical and complex for non-tech users&nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>Note:<\/strong> Another alternative to export Exchange Online public folders to Microsoft 365 is via PST Export. Connect your public folder account to Outlook and extract PST files from it, and later, using Network Upload, transfer them to Office 365. But this method too isn\u2019t suitable for large exports, needs technical expertise, and is risky for critical data.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Migrate_Exchange_Online_Public_Folders_to_Microsoft_365\"><\/span>Migrate Exchange Online Public Folders to Microsoft 365<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Organizations and large enterprises managing voluminous data transfers require following a special approach. <strong>SysInfo Office 365 Backup and Restore Tool <\/strong>is especially built for such tasks. It simplifies how you access your Online Public Folders with secure modern authentication, no server uploads or credential storage. Everything is processed locally, and the data is accessible in read-only mode, guaranteeing its fidelity and preservation. Moreover, during the migration, it keeps everything intact, including the folder hierarchy, and offers custom filters for specific data handling.&nbsp;<\/p>\n\n\n\n<p><strong>Streamlined Working for Exchange Online Public Folder Migration<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Launch the <strong>Office 365 Backup and Restore Tool<\/strong> and click <strong>Backup.<\/strong> Tap <strong>Continue<\/strong> in the next pane.&nbsp;<\/li>\n\n\n\n<li>Then, choose the <strong>mode of authentication<\/strong>, enter <strong>credentials,<\/strong> and <strong>sign in<\/strong> to your account.&nbsp;<\/li>\n\n\n\n<li>Further, pick <strong>Public Folder Mailbox<\/strong> from the options, select your <strong>User IDs, <\/strong>and click <strong>Next<\/strong>.&nbsp;<\/li>\n\n\n\n<li>Expand the <strong>tree hierarchy<\/strong> and select the <strong>folders<\/strong> that you want to export and tap <strong>Next<\/strong>.&nbsp;<\/li>\n\n\n\n<li>Afterward, choose <strong>Office 365<\/strong> from the list, enter your <strong>credentials<\/strong>, and <strong>sign in<\/strong> to the target account.&nbsp;<\/li>\n\n\n\n<li>Use all the <strong>advanced filters<\/strong> available in the panel and click the<strong> Next <\/strong>button.&nbsp;<\/li>\n\n\n\n<li><strong>Map<\/strong> your users in the<strong> destination <\/strong>selection window and click <strong>Next.&nbsp;<\/strong><\/li>\n\n\n\n<li>Finally, verify the <strong>source and destination <\/strong>and click the <strong>Backup<\/strong> button to process and finish.&nbsp;<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">Why SysInfo to Migrate Public Folders to Microsoft 365?<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>No data uploads on the web, safe and consent-oriented&nbsp;<\/li>\n\n\n\n<li>Automated access to the Public folder directly&nbsp;<\/li>\n\n\n\n<li>Source and destination mapping&nbsp;<\/li>\n\n\n\n<li>Incremental migration and direct saving&nbsp;<\/li>\n\n\n\n<li>Batch exports, duplicate detection, and selective transfers<\/li>\n\n\n\n<li>100% zero data loss and no downtime guarantee<\/li>\n<\/ul>\n\n\n\n<div style=\"background: linear-gradient(135deg, #fafdff, #ddf2ff); border-left: 5px solid #1e4258; border-radius: 12px; padding: 20px 25px; margin: 15px 0px; box-shadow: rgba(0, 0, 0, 0.08) 0px 4px 14px; transition: 0.3s; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; color: #2a2a2a;\">\n<p><strong>Client Testimonials<\/strong><\/p>\n<p>&#8220;The process to migrate Exchange Online Public Folders to Microsoft 365 for over 4,500 Public Folders was completed without losing access by users. Also, the previous access rights\/permissions and mail-enabled attributes of each Public Folder were maintained originally. The migration project finished on schedule with respect to our planned migration timelines.&#8221;<\/p>\n<p><strong>-Kelly Brian, Senior Architect, California&nbsp;<\/strong><\/p>\n<p>&#8220;We have completed a merger of departments through the movement of Public Folders that included large quantities of data. The entire migration process from Exchange Online Public Folders to Office 365 maintained the integrity of public folders and the permissions associated with them, regardless of where they physically exist within the destination location.&#8221;<\/p>\n<p><strong>-Jacob Campbell, Director Head, Financial Services, Japan<\/strong><\/p>\n<\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Best Practices to Move Exchange Public Folders to Office 365<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Before migration, ensure evaluating folder counts, hierarchy depth, permissions, and storage.<\/li>\n\n\n\n<li>Execute a pilot test first with a few files manually or using the Demo Version of the software.<\/li>\n\n\n\n<li>Compare the source and destination folders migrated in the progress dashboard.<\/li>\n\n\n\n<li>Keep all the folder permissions documented for a use at the later phase post-migration.&nbsp;<\/li>\n\n\n\n<li>Incremental migration helps reduce disruption and minimize downtime.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ending_Remarks\"><\/span>Ending Remarks&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Organizations and enterprises ready to migrate Exchange Online Public Folders to Microsoft 365 may find this blog convenient. It addresses not only data transfer, but also how you can preserve your data, what the key challenges and benefits of this migration are, and how you must proceed in the long run. Whether it is folder hierarchy, permissions, mail-enabled objects, or large content repositories, Microsoft\u2019s native migration capabilities work upto an extent. Often, large businesses need professional solutions like SysInfo Office 365 Migration Tool to ensure a successful, hassle-free, scalable, reliable, flawless, and secure data transfer in minimal time with zero loss. You can do so too by opting for the right solution for you.<\/p>\n\n\n\n<h4 class=\"wp-block-heading faq_heading\">Frequently Asked Questions<\/h4>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1782304373533\"><strong class=\"schema-faq-question\">Q1. How do I migrate Exchange Online Public Folders to Microsoft 365?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans. <\/strong>To migrate your Exchange Online Public Folders into M365, either use Microsoft Scripts, PST Export, or the dedicated Office 365 Backup and Restore Software. All the methods are suitable for this migration with their own pros and cons.\u00a0<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782304386914\"><strong class=\"schema-faq-question\">Q2. How do I migrate Exchange Online Public Folders to Microsoft 365 without downtime?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans. <\/strong>If you want minimal or no downtime during Exchange Online Public Folder to O365 migration, use Office 365 Migrator by SysInfo. It uses secure authentication protocols, verifies admin consent, and directly routes data access by Microsoft. So, no external uploads and handled downtime.\u00a0<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782304398483\"><strong class=\"schema-faq-question\">Q3. Can I prevent duplicate items during Public Folder migration?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans. <\/strong>Yes, of course, the Office 365 Backup Software has a Remove Duplicate feature, which eliminates similar items during the migration of Public Folders into Office 365 accounts in 2026 at once.\u00a0<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782304412979\"><strong class=\"schema-faq-question\">Q4. Can I migrate Public Folders from Exchange Online to Microsoft 365 Groups?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans. <\/strong>Yes, you can, but the process is not always straightforward. Your public folder size must be within 25 GB, and you must prepare target groups beforehand. Next, you must prepare a CSV mapping and use the New-MigrationBatch cmdlet using the -PublicFolderToUnifiedGroup switch in Exchange Online PowerShell for the migration. Do not forget to add the previous Public folders members to the new group.\u00a0<br><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1782304427114\"><strong class=\"schema-faq-question\">Q5. What are the biggest challenges in Exchange Online Public Folder migration?<\/strong> <p class=\"schema-faq-answer\"><strong>Ans. <\/strong>The biggest challenge in this migration from Exchange Online Public Folder to Microsoft 365 is permission mapping, large folder hierarchies, duplicate content, and lengthy migration windows. However, you can overcome them all with an all-in-one SysInfo Office 365 Migrator Tool.\u00a0<br><\/p> <\/div> <\/div>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;22152&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Migrate Exchange Online Public Folders to Microsoft 365 in 2026&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Rate this post<\/span>\n    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u201cMicrosoft Graph API doesn\u2019t support public folders, and Microsoft is soon blocking Exchange requests in Exchange Online. This means the<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":22173,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[],"class_list":["post-22152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-backup-and-restore"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Migrate Exchange Online Public Folders to Microsoft 365 in 2026<\/title>\n<meta name=\"description\" content=\"Migrate Exchange Online Public Folders to Microsoft 365 in 2026 with minimal downtime. 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So, no external uploads and handled downtime.\u00a0<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#faq-question-1782304398483","position":3,"url":"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#faq-question-1782304398483","name":"Q3. Can I prevent duplicate items during Public Folder migration?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans. <\/strong>Yes, of course, the Office 365 Backup Software has a Remove Duplicate feature, which eliminates similar items during the migration of Public Folders into Office 365 accounts in 2026 at once.\u00a0<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#faq-question-1782304412979","position":4,"url":"https:\/\/www.sysinfotools.com\/blog\/migrate-exchange-public-folders-to-microsoft-365\/#faq-question-1782304412979","name":"Q4. Can I migrate Public Folders from Exchange Online to Microsoft 365 Groups?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans. <\/strong>Yes, you can, but the process is not always straightforward. Your public folder size must be within 25 GB, and you must prepare target groups beforehand. 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