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When attempting to restore data using Veeam Explorer for Microsoft Exchange, SharePoint, OneDrive for Business, or Teams, the following error occurs: Incompatible Veeam Backup for Office 365 server version (received: X.X.X.XXX, expected: Y.Y.Y.YYY).
This issue occurs because the version of the installed Veeam Explorer application is not compatible with the version of Veeam Backup for Microsoft 365 that it connects to. Possible scenarios: Veeam Backup for Microsoft 365 and Veeam Backup & Replication are installed on the same server. As documented in KB4325, Veeam Backup for Microsoft 365 and Veeam Backup & Replication each deploy their own version of the Veeam Explorers, so installing incompatible versions of the two products on a single server leaves the Veeam Explorers unable to connect to Veeam Backup for Microsoft 365. A tenant attempts to restore data from backups hosted by a service provider. In this scenario, the Veeam Explorers installed on the tenant's Veeam Backup Server connect through Veeam Cloud Connect to the Veeam Backup for Microsoft 365 server on the service provider side. The Veeam Explorers on the tenant side were deployed from a different release of Veeam Backup for Microsoft 365 than the release running on the service provider side. Build differences within the same release do not cause this issue.This most often occurs after a service provider has upgraded Veeam Backup for Microsoft 365 to a new release and the tenants are still running the Veeam Explorers deployed from the previous release.
Shared Server Deployment Scenario Check Compatibility Review KB4325 and ensure that only compatible versions of Veeam Backup for Microsoft 365 and Veeam Backup & Replication are installed on the same server. Solution: Upgrade Veeam Backup for Microsoft 365 If Veeam Backup & Replication was upgraded and KB4325 lists a compatible version of Veeam Backup for Microsoft 365 as available: Upgrade Veeam Backup for Microsoft 365 to the version listed as compatible with the installed version of Veeam Backup & Replication. Workaround: Install Compatible Veeam Explorers on Another Server If Veeam Backup & Replication was upgraded and KB4325 does not list a compatible version of Veeam Backup for Microsoft 365 as available: On a different machine, install the same version of Veeam Backup for Microsoft 365 that is already installed. On that remote machine, launch the Veeam Explorer that is needed to perform the restore. From within the Veeam Explorer application, connect to the original Veeam Backup for Microsoft 365 server. Veeam Explorer for Microsoft Exchange > Adding Veeam Backup for Microsoft 365 Server Veeam Explorer for Microsoft SharePoint > Adding Veeam Backup for Microsoft 365 Server Veeam Explorer for Microsoft OneDrive for Business > Adding Veeam Backup for Microsoft 365 Server Veeam Explorer for Microsoft Teams > Adding Veeam Backup for Microsoft 365 Server
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