The problem occurs due to an AMSP configuration issue.

The Deep Security Agent Real-Time Scanning function has been updated to properly handle Microsoft Office temporary files. To get the update, upgrade the Deep Security Agent to the latest version.

As a workaround, perform the following:

1. On the console, go to Anti-Malware > Real-Time Scan.
2. Untick Inherited if it is enabled.
3. On Malware Scan configuration, click Edit. The Real-Time Scan Configuration Properties window appear.
4. Click the Edit button beside File List.
5. Select New to open a File List window.
6. Enter the following in the File List window:
   • Name: Specify a name
   • File: Add "*.tmp" or "c:\<tempfile directory>\*.tmp"
7. Click OK to complete the settings.