Need to delete a file type association.

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afb1302

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Aug 27, 2010
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My son and I have accidentally associated a DayZ config file with notepad. DayZ is a zombie game. So after screwing around and accidentally associating .dayzprofile files with notepad. When he opens the game it wont go full screen anymore. Not sure who what when where or why. But the only change was to the file type association. He's uninstalled and reinstalling. But the question still remains of how to delete a file type association. I can change the default program but not blank it out like it used to be. Anyway of doing that in 7?
 

logang

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Mar 29, 2012
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try this?

http://www.howtogeek.com/171932/how-do-you-remove-a-default-file-association-in-windows-7/

Or the bottom portion of this
http://helpdeskgeek.com/windows-7/remove-file-type-associations-in-windows-7/
 

mdowd2001

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Dec 11, 2015
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Try this as a work-around:
1. Create a file with notepad somewhere in your personal folders. Call it dummy.txt. Leave it blank.
2. Change the extension to *.exe. Now the file is dummy.exe (Actually you don't even have to do this, I think.)
3. Now right-click on the file that has the unwanted association. Go to 'Properties'. Click the "change" button on the GUI
where it says 'opens with:' Use 'Browse' and find the file 'dummy.exe' that you just created and choose it.
4. Close the GUI. Now go and delete the file 'dummy.exe'. The file should have 'Unknown Application' associated to it.
 
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