How to change a file association in the registry

Remove From My Forums. Answered by:. Archived Forums. Windows 7 Miscellaneous. Use this forum to discuss miscellaneous issues that cannot be covered in any other Windows 7 forum. Sign in to vote. I want to change the file association to none. When I selected a program to open a file, I forgot to uncheck the box that says; Always use the selected program to open this kind of file. I do not want to change the association to another program, I want to change the file association to none.

This does not seem to be an option. Proper installers will not delete the previous owner - they will add the new app to a choice that the user can pick from a context menu choice.

Phil Wilson. Microsoft needs to document changed behavior in Windows 7 or was it Vista? I'll try to post more specifics when I have them. Thursday, September 2, AM. Friday, September 3, AM. I was then able to write to the key, and now my file association code works. Sunday, September 5, PM. This is nonsense! Both keys are exactly the same! Tuesday, May 24, PM. What is nonsense is your inability to understand that this shortcut was produced by Microsoft in modern OS's in order to support older applications that read or wrote information from HKCR.

This shortcut that has you in awe is Microsoft's backwards compatibility mechanism. I never said the key was different to the others, did I? First research, then rant, or better yet, don't. Tuesday, September 13, PM. Can do the same using group Policy Monday, September 10, PM.

Let's say that somehow you have a key for the same extension ". Proposed as answer by dvanbru Wednesday, October 1, PM. Tuesday, February 25, PM. Thursday, April 17, PM. Can you please elaborate on exactly what registry entries are to be created.

I am trying to set my application as default application for pdfs. Thursday, June 8, AM. MEOW Daddy lol I don't even know what you're all on about, I don't know how I got here, but settle down buckeroo, he isn't here for a lecture, answer his question and keep your opinion to yourself, or I may happen upon things like this and troll you lol.

If you don't like the Microsoft Store app - okay, that's fair. If, for whatever reason, that method doesn't work for you, right-click on any. Actually by the grace of God I was actually to Google it enough that I found the proper keys to change.

Oddly enough, once I did that, the next time I opened a. So far, I've had no ill effects and I've been testing it quite a bit. And I know that I shouldn't be messing around with the registry but I have Acronis True Image and I just backed my PC up last night so worst case scenario I'd just have to reload that image to my pc.

Hi, I'm trying to change the default program for opening. However, I have two questions: 1. Would I have to change anything in the NullFile key? Thanks, Michael. This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question Report abuse.