As I’m sure you know, you can double click on an Excel file in Windows Explorer to open it in Excel. Sometimes this causes a problem, however. Typically, the problem encountered is that the file doesn’t open, but Excel opens with a blank area where the workbook should be. If you encounter this problem, the first two things you should do are:
1. Tools>Options>General and uncheck Ignore Other Applicaitons.
2. Close Excel and from Windows use Start>Run. Type in
then do the same thing, but type
Replace MyPath with the actual path to Excel.exe. Neither of these commands will start Excel, but they will rewrite the registry items associated with Excel. I’ve never had to type the path, I’ve just used
but better safe than sorry. And thanks to Dave Peterson for the /unregserver tip. Sometimes just using /regserver will fix the problem, but there have been occasions when the /unregserver step was needed.