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BugZero found this defect 803 days ago.
After installing the Windows June 14,2022 update (KB5014702/KB5014746) on a Windows file server hosting SMB 3.0 shares, the follow Veeam Backup & Replication operations may be impacted: If those SMB 3.0 shares are added to Veeam Backup & Replication with the "Backup from Microsoft VSS snapshot" option enabled, the NAS Backup job(s) protecting those SMB 3.0 shares may fail with the following error: Failed to create a VSS snapshot Error: Failed to add volume [\\SMB3FS\SHARE1\] to the VSS snapshot set The given shadow copy provider does not support shadow copying the specified volume. --tr:Failed to add volumes to the snapshot set. --tr:Failed to perform pre-backup tasks. If those SMB 3.0 shares are used to store VMs for a Hyper-V host running Server 2012R2, the Backup job(s) for the VMs stored on those SMB 3.0 shares may fail with the following error: Failed to create snapshot (Fileshare Provider) (mode: Crash consistent) Details: Failed to add volume [\\SMB3FS\VOLUME1\] to the VSS snapshot set The given shadow copy provider does not support shadow copying the specified volume. --tr:Failed to add volumes to the snapshot set. --tr:Failed to perform pre-backup tasks. When either type of job fails the following error will be found in the Windows Event Logs of the File Server hosting the SMB3.0 shares: Microsoft File Share Shadow Copy Agent Error: The client connecting to the FssAgent RPC server did not have Local Administrator or Backup Operator privilege on this machine.
NAS Backup Job Failure Review the following article from Microsoft: KB5015527: Shadow copy operations using VSS on remote SMB shares denied access after installing Windows update dated June 14, 2022 Specifically: Ensure that the June 14, 2022 update is installed on the following servers: File Server hosting the SMB 3.0 shares. The Veeam Backup Server. All Backup Proxies used by the NAS Backup job. Check the share permissions within Veeam Backup & Replication to ensure that Veeam has been configured to use a domain account that is a member of the Local Administrator or Backup Operator group on the File Server hosting the SMB 3.0 Shares.