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Microsoft Security Community Blog
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Microsoft Exchange Online: Search-MailboxAuditLog and New-MailboxAuditLogSearch will retire

ColbyBoone's avatar
ColbyBoone
Icon for Microsoft rankMicrosoft
Jan 14, 2025

As part of our ongoing efforts to improve the logging capabilities of Exchange Online, we are sharing our timeline for decommissioning the Search-MailboxAuditLog and New-MailboxAuditLogSearch cmdlets.

Important Update The licensing for the migration tool related to the deprecation of the Search-MailboxAuditLog cmdlet is specifically designed for customers with extended audit log retention set ...
Updated Mar 06, 2025
Version 3.0
audit
ColbyBoone's avatar
ColbyBoone
Icon for Microsoft rankMicrosoft
Jan 31, 2025

Hi Jeremy , 


Thank you for your question! We want to clarify that migration of logs applies for those who have set long retention ( older than a year ) on audit needs in Exchange , and would like to backfill that historical data to Purview. This ensures that all relevant data is captured and stored appropriately. Please let us know if you have any further questions or need additional information.  

stefanwey-umb's avatar
stefanwey-umb
Brass Contributor
Aug 26, 2025

Unacceptable if you are paying for the E5 add-on in Pureview