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- Managed Veeam Agent backup job fails with "Unknown invoker method: 2757" error
Managed Veeam Agent backup job fails with "Unknown invoker method: 2757" error
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Challenge
A Veeam Agent backup job managed by the backup server fails with the following error:
Failed to start backup job Error: Unknown invoker method: 2757
Cause
The issue occurs if you have the following software configuration:
- Veeam Agent for Microsoft Windows 3.0.2 is installed on the backed-up computer.
- Veeam Backup & Replication 9.5 U4a or earlier is running on the backup server.
Solution
To resolve the issue, you must upgrade Veeam Backup & Replication to version 9.5 Update 4b. For details about the Veeam Backup & Replication upgrade process, see Release Notes in this Veeam KB article and the Upgrading to Veeam Backup & Replication 9.5 Update 4 section in the Veeam Backup & Replication User Guide.
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