Possible Duplicate:
Associate a File Type with a Specific Program

I downloaded a program and it configures itself as default program for .mdf files and I see a ugly icon for mdf files in my windows right now!

As default, mdf files has a nice icon on it and there was no program associated with this file type.

Given that there was no program associated with that, I cannot get back the settings. Is there any way I can reverse this inside registry or something?

marked as duplicate by Ƭᴇcʜιᴇ007, random Jan 18 '12 at 3:35

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • @techie007 it is not the same. I remove all the associated programs for this file. It is not possible to do this with UI. – tugberk Jan 15 '12 at 17:21
  • There are more than one answer provided, did none of them suffice? Are you looking to associate a "Default Program", as in your title, or just an icon? – Ƭᴇcʜιᴇ007 Jan 15 '12 at 18:28

first place to try and mess with it is HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\ (and the extention itself of course)

Now you could do a quick export of that section, just for backup purposes. Right click Export, or in the menu File Export, Selected branch. . . Then delete away :-) Removing UserChoice will probably get rid of the re-iconification.

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