Release Information for Veeam Backup for Microsoft 365 5d Cumulative Patch KB4278

Please confirm you are running Veeam Backup for Microsoft 365 build 5.0.3.1033 or higher prior to installing this cumulative patch KB4278. You can check this under Help and Support > About in Veeam Backup for Microsoft 365 console. After upgrading, your build version will change to 5.0.3.1063.

As a result of ongoing R&D effort and in response to customer feedback, cumulative patch KB4278 provides a set of enhancements and bug fixes, the most significant of which are listed below:

General

• Retention job may mistakenly remove SharePoint and OneDrive backup data (including Teams channel files) from an object storage repository. The issue applies to repositories configured with the snapshot-based retention and backup data migrated from a local Jet-based repository to object storage using the Move-VBOEntityData cmdlet.
• Under certain conditions, in object storage repositories, the retention job may fail with the “JetError -1605, JET_errKeyDuplicate” error.

Backup

• Incremental SharePoint backup may fail with “The attempted operation is prohibited because it exceeds the list view threshold enforced by the administrator” error.
• Under certain conditions, backup of SharePoint sites created in non-Latin languages may fail with the “Length of parameter ResourceName exceeds specified max for the column” error.

Restore

• Restore of SharePoint items’ attachments from an object storage repository fails with “Error: Recursive read lock acquisitions not allowed in this mode.”

RESTful API

• The sizeBytes parameter in the (GET) /v5/RestoreSessions/{restoreSessionId}/Organization/OneDrives/{oneDriveId}/Documents/{documentId} response body returns negative values if the item size is larger than 2 GB.

This Cumulative Patch also includes all fixes that were present in Veeam Backup for Microsoft 365 5d Cumulative Patch KB4235, Veeam Backup for Microsoft 365 5d Cumulative Patch KB4222 and Veeam Backup for Microsoft 365 5d Cumulative Patch KB4270.