We have a couple of users in our network that are suddenly having problems with opening Excel files. When they double click on the file, Excel will open to show the toobars at the top and the blue border. However, where the spreadsheet itself should be, you just see the underlying desktop wallpaper. Does anyone have any reason why this would happen? We have uninstalled and reinstalled Excel on one user's computer. It seemed to solve the problem for a couple of weeks, but now it's doing it again. Thanks!