Reverting server options or settings
If there were configuration changes to the server, try reverting the settings back to their original values and retry the failing operation.
If the operation succeeds, try to make one change at a time and retry the operation until the attribute change that caused the failure is identified.
Changes to options in the server options file, or configuration changes to the server using SET or UPDATE commands might cause failures for operations that had previously succeeded. Changes on the server to device classes, storage pools, and policies might also cause failures to operations that had previously succeeded.