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BugZero found this defect 2250 days ago.
The following tasks fail with the error shown below: Back up of SQL Server transaction logs. Truncation of SQL Server transaction logs. Collection of SQL instances metadata for Veeam Explorer for Microsoft SQL. While the error message varies depending on the actual operation, there is a common error thrown in the job sessions: "Logon failure: the user has not been granted the requested logon type at this computer. Code: 1385"
This issue occurs due to missing required permissions.
The permissions of the account specified for use with Application-Aware Processing need to be adjusted on the SQL server. More information can be found in: Veeam Backup & Replication Permission Requirements Veeam Explorer for Microsoft SQL Permission Requirements