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I recently had a similar problem with all of my media file associations, and it seemed due to an obnoxious media player called DAPlayer.The windows look pretty much the same in Windows 7 and Windows.1, as you can see.Right-click or long-press the file name to open a context menu, select "Open with." This menu is accessible in both Windows 7 and Windows.1.Control Panel : go to "Programs - Default npav 2013 serial key Programs - Set Your Default Programs".If you want the selected program or app to be the new default for the file's extensions, select "Use this app for all # files." If you just want to open the app or program, deselect the checkbox.Here, in Windows 7, I have chosen the Reader for PC program from Sony, and I'm shown just a little information about the program and offered a choice to have it open all the files it can, or choose which files it will deal with.Let's see what the choices are: Since I haven't installed another graphics-editing program in Windows.1 yet, I am fine with Paint opening the common graphics format files, so I've selected.bmp,.gif,.jpeg,.jpg and.png, alongside its existing defaults.When you finish, click or tap.If you still don't see what you want, click or tap "Look for another app on this PC" to find your program's executable in File Explorer.Photo Gallery to open pictures and, windows Media Player to open music and videos.Regardless of how you get to the menu, if your program appears in the list and you click it, you won't change the file association.While searching is faster, you can also find the appropriate window in the.In Windows.1, you can find the same "Open with" menu on the File Explorer's ribbon interface.Even after uninstalling the program, all of my associations remained stuck on "Unknown Application".Browse through the list and select any file types you want to associate to your chosen program.(For the record, Paint is set the same way in Windows 7, but I use another graphics program for images and did not want to choose Paint as the default).
You can also change file associations by file extension.