Sometimes after dealing with an infection or even after installing or uninstalling software Windows forgets default file associations and keeps asking you which program to use to open a certain file type (e.g. .exe)....
This can be fixed as follows:
To fix file associations in XP run the file association fix on former MVP Doug Knox’s site http://www.dougknox.com/. Go to Win XP Fixes section, then look for File Association Fixes.
To fix file associations in Vista see this page: http://www.winhelponline.com/articles/105/1/File-association-fixes-for-Windows-V ista.html
To fix file associations in Windows 7 see this page: http://www.winhelponline.com/blog/file-asso-fixes-for-windows-7/
To fix file associations in Windows 8/8.1 see this page: http://www.eightforums.com/tutorials/8486-default-file-associations-restore-wind ows-8-a.html
To fix file associations in Windows 10 see this page: Windows 10 File Associations
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