Fixed! One of my servers has been failing to backup with the error “0xe00084af The directory or file was not found, or could not be accessed. Final error category: Job Errors. For additional information refer to link V-79-57344-33967” I spent ages troubleshooting the errors and trying to work out what was going on and found that it would fail to backup any file on the local hard disk of the machine.
I posted a note in the symantec forums and didn’t hear anything back, but did find a post that upgrading to 10d might fix it (not a current solution as this would mean purchasing an upgrade of the software for the exchange agent and the exchange agent is currently working)
The other solution was to stop SQL servers on the box. This server was the WSUS box and I had also recently upgraded it to version 3 of WSUS. This created (at least) two new services – SQL Server VSS Writer and Windows Internal Database (Microsoft ##SSEE). Through trial and error I discovered that stopping the SQL Server VSS Writer service meant the backup would work, which is weird as why this should affect me backing up something like c:\jobs\fred.bat which has nothing to do with SQLI don’t know.
I’m hoping that my forum posting about the problem will get a better solution but for now I’m just pleased to be able to backup my file server.