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I'm having trouble changing the icon for specific file types in Windows 8. I have read countless how tos including this question and this one, tried FileTypesMan and several other programs and edited the registry but none work exactly. After each method I have purged the icon cache and restarted just to be sure. I want to change the icons for .css and .js files (and others down the line) to separate icons, but both types open in Notepad++ by default.

Changing the DefaultIcon key in the registry for HKEY_CLASSES_ROOT\Applications\notepad++.exe (the ProgId associated with .js and .css in HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.css\UserChoice) changes the icon for all files that open in Notepad++.

Changing the DefaultIcon for .css or .js files in HKEY_CLASSES_ROOT\CSSfile and HKEY_CLASSES_ROOT\JSFile has no effect.

Adding a DefaultIcon key to HKEY_CLASSES_ROOT\CSSfile did nothing either, and I was reluctant about experimenting by adding it elsewhere in case I broke something.

One thing I have noticed is, if I change the icon of an extension without a default program associated with it (.php in this case) then changing DefaultIcon in HKEY_CLASSES_ROOT\php_auto_file did work, but I stupidly chose to always open PHP files in Notepad++ after that and then it changed to the Notepad++ icon.

So is there a way of changing the icon for a file type that has a default program associated with it without changing all icons for files that open in the same program? Or is there a way of disassociating a file type with a program so that I can change the icon but always have to use "Open With..."? Preferably the former option.

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I am looking fot this too.. –  tumchaaditya Aug 29 '13 at 23:58
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2 Answers

There is really simple program called Default Programs Editor available to download from here. It works good also for Windows 8.1 (not sure for Win 8).

Default Programs Editor

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This app is a bit clunky but it works. You need to create a new file type for each extension that you want to change the icon for, and then assign an icon to that new file type. –  Alan Apr 9 at 15:45
    
This seems to do the trick! It would be nice to have some info on exactly how it does its thing on the back-end for those who wish to accomplish this manually. The info provided by Microsoft appears to be inaccurate, and doesn't work for many. –  JimNim Jun 9 at 15:06
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Check out this explanation, straight from the horse's mouth.

http://msdn.microsoft.com/en-us/library/windows/desktop/hh127427(v=vs.85).aspx

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Can you please summarize or include a quote of what's in your link? That way your answer is still useful if it changes or becomes unavailable. Please read the help article on answering for more information, specifically the section titled "Provide context for links". –  Moses Oct 11 '13 at 4:02
    
These steps are essentially the same as those which ch1902 said were already attempted - this process doesn't work. –  JimNim Jun 9 at 15:01
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