Originally Posted by Midknyte (Post 1285444)

You may have noticed the Microsoft .NET Framework Assistant in your Firefox Addons after Windows update. If that wasn't bad enough, the uninstall button is grayed out. Here's how to get rid of that pest:

1. Open Regedit (Start > Run > “regedit”)
2. Go to “HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\extensions”
(or “HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Mozilla\Firefox\extensions” for 64-bit versions of Windows)
3. Delete the “{20a82645-c095-46ed-80e3-08825760534b}” key

Originally Posted by HAN (Post 1285446)

Or, if you can't (or don't want to) edit the registry, here is the Microsoft fix for the issue...
http://www.microsoft.com/downloads/d...1-6383ba034eab
This is the method I used.