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Sophos Anti-Virus for Mac OS X: Primary Server could be not be contacted when accessing Windows 2003 hosted CID from Mac computer

Issue
Primary Server could be not be contacted when accessing Windows 2003 hosted CID from a Mac client\server. One of the following occurs:

Sophos product and version
Sophos Anti-Virus for Mac OS X 4.9.14
Enterprise Console 3.x

Operating system
Mac OS X 10.4
Mac OS X 10.5
Windows 2003

Technical Information
This is caused by a default Security Setting of the Server 2003, which digitally signs the communication to the Server. This causes the MAC client/server to be unable to authenticate itself on the Windows 2003 server.

What to do

On the Windows 2003 server:

  1. Go to 'Domain Controllers Security Settings'|Local Policies|Security Options.
  2. Search for 'Microsoft network server: Digitally sign communications (always)' and disable it.
  3. After a few minutes you should be able to mount a share without any problems and AutoUpdate should work properly.
  4. If using Active Directory please allow 15-30 minutes to populate the changes across the managed computers.

 

If you need more information or guidance, then please contact technical support.