When you check in SharePoint|Central Administration|Operations|Timer Job Status, the 'Virus Scanner Update' shows a status of 'Failed', despite the fact that Sophos Anti-Virus has successfully updated.
Sophos product and version
Sophos for Microsoft SharePoint
What to do
- Go to Windows Services and start the 'Windows SharePoint Services Administration' service.
- Wait for several minutes, then re-check the status of the 'Virus Scanner Update'. It should now display a status of 'Succeeded'.
Note: This issue arises as a result of the SharePoint update job functionality, and is unconnected to Sophos AutoUpdate.