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Files won't open once associated with Excel
I have a friend who has Windows 7 and Office 2007. He needs to open tab-delimited files that are saved in the .dat format. He's wants to open them in Excel 2007.
We set up Excel as the default program (we had to manually browse to excel.exe. I also tried excelconv.exe). However, double-clicking on the file doesn't open it. It sorta blinks and then nothing happens.
We can open the files if we start in Excel and browse to the desired file that way.
Is there perhaps a problem with the conversion dialog not opening when you double-click something? I think this used to work on his XP machine with Office 2003.