Cannot change how a file opens (What application opens it)

First off I'm running Win8.1


Well I have a Gmod server and I'm trying to convert some of these gma files with a converter.
I need to open the file with the converter to have them convert but whenever I would choose to pick the converter it would still be the same and not open it or change it.

I got tired of trying to figure stuff out and messed around in the regedit which was bad and what I did was:

Changed the gfx VLC key name to gma

Created a new key below it named
(the name of the converter app)

Changed both data strings to file locations to the converter

Closed and saved

And then what happened after I restarted my computer was:

All the previous GMA files looked like VLC files, default opened with VLC and you couldn't change them

Type of file said VLC media file(.gfx) (.gma)


What I need help with:

To fix the regedit problems I caused by editing the file (I tried changing the gfx file back to normal but my gma files still look like they were after I edited the regedit)

And I'd like to know how to fix the problem where I can't change what application a file opens with.

Thanks for spending your time and reading this, and or your help.


Windows Forum Team
Staff member
Premium Supporter
in 8 or 8.1 you set them from the control panel... once you start stuffing about in regedit, all bets are off and I'd re-install the system now if I was you mate... assumes you have no backup software image?

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Windows Forum Team
Staff member
If you tried modifying it manually in regedit, I agree with ussnorway you may have hosed it. You maybe able to either reinstall or do a repair on all relative programs and hope it fixes the class associations. Then again Control Panel > Default Programs may fix the association, or you can use the command line utility assoc where the form is assoc .ext=filetype where the filetype would be a ProgOpenID as listed by just typing assoc

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