Hello, since two days I face an issue when trying to open Excel within my Standard User account - after almost 2 years without problems. There is no difference in double clicking an .xlsx file in Windows Explorer, choosing Excel pinned to the Start Menu, clicking on Start>>All Programs>>Microsoft Office>>Microsoft Excel 2010, or picking the Application file in C:\Program files (x86)\Microsoft Office\Office14. When doing so, I receive the message "Windows cannot access the specified device, path, or file. You ay not have the appropriate permissions to access the item." All other Office programs don't show this behavior. After changing the account from Standard User to Administrator everything seemed to work fine, but when turning back being logged on as Standard User the message returns. I'm running Windows 7 Ultimate 64bit. Does this sound like a malware infection? Your help is very much appreciated. Cheers, t.