Word experienced an error trying to open the file when accessing a DFS path

I ran into a strange issue today where Word and Excel would not open files on a user's desktop. Accessing them through regular share paths (\\server\share) would work, but DFS paths would not (\\company.com\share).

The fix was adding the domain to the IE intranet sites.

  1. Create a new GPO
  2. Enable User Configuration/Policies/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Site to Zone Assignment List
  3. On the table enter Value name: \\company.com\* Value: 1


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