Opening Excel files on Server- very slow

October 2016


Here is my problem:
I have a Windows 2003 server and a couple of XP and Vista based clients
On a particular PC (Windows XP Pro SP3 with Office 2003 + Compatibility Pack Office 2007), the opening of Excel files is very slow, compared to other applications.
I've tried several things, but the problem persists.


  • This may be due to an update: "Microsoft office file validation Add-In".
  • Uninstall it.

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