I believe there are a couple of things you can do... 1. In internet explorer, you have to add the servername "\\appserver" in the trusted sites zone. 2. There are regtweaks to disable this...I will post when I find them...I have them in my regtweaks... EDIT: Here: [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download] "CheckExeSignatures"="no" "RunInvalidSignatures"=dword:00000001 Try 1 or 2 or both of them, see what fixes this and post back! i will try i to morrow and i will post which was a correct method