Com-Central.net

Background

The update I installed was Microsoft Visual Studio 2008 Service Pack 1, and naturally it was needed as an update to Visual Studio.

In that page there’s a long list of the software that will be installed, which are all Visual Studio components.
What happened

What came as a complete surprise to me is that it also installed an extension in Firefox, mentioned nowhere in the documentation and not as an optional install in the installer. Ok, bad and annoying enough, but things were about to get worse…

Trying to uninstall it from the Add-ons menu (Tools > Add-ons in Firefox), the Uninstall button is disabled! Yes, my dear developers, Microsoft has actually and intentionally made it impossible to uninstall it!

Such behavior and thinking goes completely opposite to the nature of the web, and it’s definitely not the stance of any other Firefox extension - or any software whatsoever, actually! No developer in his or her right mind would do this to an end user, so I’m sure it’s some “clever” middle management guy who thought this up…
How to remove it

Against what many people think, though, it can be uninstalled - but by nothing less than hacking the actual registry of Windows! Open your Start Menu and choose Run. Type in regedit and press enter/click OK. Within there, you have to look for something called HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\extensions and delete the key there (for Windows Vista 64-bit HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Mozilla\Firefox\Extensions).

When you have done that, type in about:config in the address bar in Firefox, accept the warning and then remove general.useragent.extra.microsoftdotnet and microsoft.CLR.clickonce.autolaunch.

And, to finish it off, open Windows Explorer and go to \WINDOWS\Microsoft.NET\Framework\v3.5\Windows Presentation Foundation\DotNetAssistantExtension\ to remove the last remnants of the evil extension.