DAT generally is short for "data", and there's no unique program to associate it with. All I can suggest to get rid of this application: system restore to before a little while back.
Kees
A little while back I downloaded and installed a file shredder but it made the contents of the Recycle Bin invisible. It didn't bother me at first but now it does. I tried to uninstall it but unfortunately, the uninstaller doesn't work. A message says that the DAT format is not recognised. I looked in File Types and found that DAT files were associated to Media Player Classic. Could anyone advise me on how to re-associate DAT files to whatever they should be so I can uninstall this application?
OS: XPsp2-home

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