Job with truncation enabled shows warning:
Failed to truncate transaction logs for SQL instances: MICROSOFT##WID
Note: This KB article only applies if the specified instance is named MICROSFT##WID.
After applying update 3 for Veeam Backup & Replication v8, we attempt to connect to an internal Microsoft Database during log truncation.
The Task.<vmname>.<refid>.log file for the VM in the job will contain:
Error VssControl: TruncateSqlLogs failed (System.Exception) Error at Veeam.Backup.VssProvider.CVssControl.TruncateSqlLogs(Guid jobId, CCredentials creds) Error at Veeam.Backup.Core.CViGuestVssFreezer.TruncateSqlLogs(Boolean bSafe) Error Failed to process 'TruncateSQLLog' command. Error Failed to truncate transaction logs for SQL instances: MICROSOFT##WID. Possible reasons: lack of permissions, or transaction log corruption. (System.Runtime.InteropServices.COMException) Error at VeeamGuestHelperCtrlLib.IVeeamVssProvider.TruncateSqlLogs(Guid jobUid, String sqlLogin, String sqlPwd) Error at Veeam.Backup.VssProvider.CVssControl.TruncateSqlLogs(Guid jobId, CCredentials creds)
This issue is fixed in Veeam Backup & Replication v9.
If you are unable to upgrade to v9, please contact Veeam Support and reference Bug# 59525.
This issue only applies to 220.127.116.114, and for the MICROSOFT##WID instance.
For any other truncation issues, please see the following KB: https://www.veeam.com/kb2027