Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Remove the Microsoft .NET Framework Assistant (ClickOnce) Firefox Extension

29 Mar 2009   #1
SqdnGuns

Slackware / Windows 7 x64 7100
 
 
Remove the Microsoft .NET Framework Assistant (ClickOnce) Firefox Extension

The Microsoft .NET Framework 3.5 Service Pack 1 update, pushed through the Windows Update service to all recent editions of Windows in February 2009, installs the Microsoft .NET Framework Assistant firefox extension without asking your permission. This update adds to Firefox one of the most dangerous vulnerabilities present in all versions of Internet Explorer: the ability for websites to easily and quietly install software on your PC. Since this design flaw is one of the reasons you may've originally choosen to abandon IE in favor of a safer browser like Firefox, you may wish to remove this extension with all due haste.
Unfortunately, Microsoft in their infinite wisdom has taken steps to make the removal of this extension particularly difficult - open the Add-ons window in Firefox, and you'll notice the Uninstall button next to their extension is grayed out! Their reasoning, according to Microsoft blogger Brad Abrams, is that the extension needed "support at the machine level in order to enable the feature for all users on the machine," which, of course, is precisely the reason this add-on is bad news for all Firefox users.
Here's the bafflingly-convoluted procedure required to remove this garbage from Firefox:

  1. Open Registry Editor (type regedit in the Start menu Search box in Vista/Windows 7, or in XP's Run window).
  2. Expand the branches to the following key:
    • On 32-bit systems: HKEY_LOCAL_MACHINE \ SOFTWARE \ Mozilla \ Firefox \ Extensions
    • On x64 systems: HKEY_LOCAL_MACHINE \ SOFTWARE \ Wow6432Node \ Mozilla \ Firefox \ Extensions
  3. Delete the value named {20a82645-c095-46ed-80e3-08825760534b} from the right pane.
  4. Close the Registry Editor when you're done.
  5. Open a new Firefox window, and in the address bar, type about:config and press Enter.
  6. Type microsoftdotnet in the Filter field to quickly find the general.useragent.extra.microsoftdotnet setting.
  7. Right-click general.useragent.extra.microsoftdotnet and select Reset.
  8. Restart Firefox.
  9. Open Windows Explorer, and navigate to %SYSTEMDRIVE%\Windows\Microsoft.NET\Framework\v3.5\Windows Presentation Foundation.
  10. Delete the DotNetAssistantExtension folder entirely.
  11. Open the Add-ons window in Firefox to confirm that the Microsoft .NET Framework Assistant extension has been removed.
It will be a great day when PC users no longer have to waste this much time to protect themselves from those who write the software they use. (And if you're thinking, "Why not just use a Mac," may I remind you of the MobileMe junk recently installed on so many Windows machines without their owners' permission!)



SOURCE: Annoyances.org - Remove the Microsoft .NET Framework Assistant (ClickOnce) Firefox Extension


My System SpecsSystem Spec
.
29 Mar 2009   #2
Barman58

Windows 10 Pro x64 x2 Windows 10 Enterprise x64, Ubuntu
 
 

Hi SqdnGuns,

Just as an update.

I'm running firefox 3.08 on 7057 x64 and the uninstall worked without any registry edits so maybe FF have included this in the 3.08 update which came in during the last couple of days
My System SpecsSystem Spec
29 Mar 2009   #3
SqdnGuns

Slackware / Windows 7 x64 7100
 
 

Quote   Quote: Originally Posted by Barman58 View Post
Hi SqdnGuns,

Just as an update.

I'm running firefox 3.08 on 7057 x64 and the uninstall worked without any registry edits so maybe FF have included this in the 3.08 update which came in during the last couple of days

Interesting, I am running 3.08 and had to use the hacks. I don't see anything in Firefox changelog about a fix for this:

Security Advisories for Firefox 3.0
My System SpecsSystem Spec
.

29 Mar 2009   #4
Barman58

Windows 10 Pro x64 x2 Windows 10 Enterprise x64, Ubuntu
 
 

Umm Strange,

I assume you're using the same windows build as I am? so not sure why the difference
My System SpecsSystem Spec
29 Mar 2009   #5
SqdnGuns

Slackware / Windows 7 x64 7100
 
 

Quote   Quote: Originally Posted by Barman58 View Post
Umm Strange,

I assume you're using the same windows build as I am? so not sure why the difference
7068 x64 here.............

Software can be some crazy skit sometimes..........
My System SpecsSystem Spec
30 Mar 2009   #6
Airbot

Windows 7 Ultimate x64 SP1
 
 

It's weird cuz since d/ling FF 3.07 that net framework add on doesn't even add itself to my FF anymore. It would install with 3.06 and down.
My System SpecsSystem Spec
Reply

 Remove the Microsoft .NET Framework Assistant (ClickOnce) Firefox Extension




Thread Tools




Similar help and support threads
Thread Forum
How can I permanently remove GoSaVeu browser extension?
How can I remove GoSaVeu web browser extension, for ever? I use Windows 7 Ultimate 64-bit and my main browser is Google Chrome (I still have Firefox and IExplorer installed). Every time I start Chrome Avast would report that it has blocked a threat and it will continue periodically reporting the...
System Security
How can I download Microsoft online ID assistant 7?
while the download/install worked fine on a 7 laptop, I'm caught in a viscious circle with a 7 desktop where it refuses to install the program stating that a newer version of the program is already installed; and must be un-installed, before the online ID assistant 7 can be installed. I also get...
Software
Shortcut Extension - Remove or Restore
How to Remove or Restore the "Shortcut" Name Extension in Windows 7 and Windows 8 This tutorial will show you how to remove or restore the "- Shortcut" extension from a shortcut file name when any new shortcut is created in Windows 7 and Windows 8. This will only remove or restore the...
Tutorials
Looking for a Firefox extension .......
....... that opens a balloon when a word or words are highlighted. The balloon contains icons for Google, Bing and 2 or 3 other search engines. Had this installed but lost it and can't find it when searching for Add-ons. Anyone recognise it and know its name? Found another one that copies...
Browsers & Mail
Microsoft hides mystery Firefox extension in toolbar update
More - Microsoft hides mystery Firefox extension in toolbar update
News


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 16:27.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App