Firefox users with the latest Microsoft .net Framework 3.5 SP1 installed might have noticed a message yesterday on browser startup that was telling them that the Windows Presentation Foundation plugin and the Microsoft .net Framework Assistant add-on. Quite a few things puzzled many users about this: Most were pretty sure that they did not install the add-on or plugin in first place which made it even more mysterious to them. When they checked the plugins section in Firefox add-ons they also noticed that they could not uninstall the Windows Presentation Foundation plugin in Firefox. Had not it been blocked it would be possible to disable it but that’s not the same thing obviously.
The following is a guide on how to remove the Windows Presentation Foundation plugin in the Firefox web browser for good. If the plugin would not be blacklisted it would be possible to find out about its dll files by typing in about:plugins in the web browser address bar.
The dll NPWPF.dll is the the Windows Presentation Foundation plugin. Here are the steps to remove it from the Firefox web browser (and other Mozilla products) for good:
- Close the Firefox web browser and every other Mozilla software that is running.
- Go to x:\WINDOWS\Microsoft.NET\Framework\v3.5\Windows Presentation Foundation\ in windows Explorer where x is the drive letter where Windows is installed on the computer system.
- Locate the file NPWPF.dll
- Create a backup of the file by copying it to another location, e.g. to c:\backups\
- Delete the dll NPWPF.dll in the Windows Presentation Foundation folder
- Restart the computer
Open Firefox after the restart. The Windows Presentation Foundation plugin should not show up in the list of installed plugins anymore. There is a second step that might be necessary. There is also a Registry entry for the plugin. Do the following to remove the plugin from there as well:
- Open the Windows Registry, press [Windows key R], type regedit and hit [enter]
- Locate the Registry key HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins
- Locate the sub-key HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@microsoft.com/WPF,version=3.5
- Right-click the sub-key and select Export to backup the key before deleting it.
- Delete the key in the Registry
- Restart the computer system or kill and reload explorer.exe in Windows to load the Registry without the key.
This should get rid of the Windows Presentation Foundation plugin in Firefox for now.
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18 Responses to “How To Uninstall Windows Presentation Foundation Plugin In Firefox”
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[...] you are getting the Window Presentation Foundation plugin message when you open Firefox then click here to get step-by-step instructions on how to remove [...]
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[...] The following is a guide on how to remove the Windows Presentation Foundation plugin in the Firefox web browser for good. http://www.ghacks.net/2009/10/18/how…in-in-firefox/ [...]
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[...] Windows Presentation Foundation – додаток на Microsoft WPF; Mozilla и Microsoft препорачуваат да биде оневозможен, поради тоа што го загрозува користењето на Firefox; од неодамна се наоѓа на листата на блокирани додатоци за Firefox, на што Firefox од верзијата 3.5.3 предупредува автоматски; ако сакате, можете и да го избришете. [...]
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[...] . Again probably something that no user will ever come in contact with. … Visit link: How To Uninstall Windows Presentation Foundation Plugin In Firefox Categories : Cool [...]
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But what exactly do these Microsoft add-on’s actually DO? What benefit do they offer the user?
JoJo I remember that the Framework Assistant plugin enabled one click installations, whatever that means. It is probably something that less than 1% of all Firefox users need. The WPF seems to be for rendering which suggests that it will only work on websites that make use of that technology. Again probably something that no user will ever come in contact with.
To answer Jojo’s question: Microsoft offers you the “genuine advantage” of being as wide open to hacks as Internet Explorer. Now all your third party programs can be just as genuinely advantaged as Microsoft’s.
I did a much easier solution: I just removed .Net totally from my PC’s. There’s absolutely no need for .Net except for some hack programs that requires it to run the keygen. For that, I have the .Net in a sandbox.
Have many people remove the .Net and Microsoft loses money on their .Net marketplace. Microsoft will than have to rethink their high handed fascist ways.
“I did a much easier solution: I just removed .Net totally from my PC’s.”
Errrr, doesn’t VLC require .net to install? Comodo? It’s Sunday a.m. and I’m still foggy, but there are a few quality(not MS) programs that have prompted me to install .net framework before continuing. Seems hasty to remove completely.
Well that may work for you, but for me, and thousands of others, that is not an option. For one I run WindowBlinds, and that needs the Net framework. I know there are others that feel like we should just have the choice to install what we want. Nice try though.
“If the plugin would not be blacklisted it would be possible to find out about it’s dll files by typing in about:plugins in the web browser address bar.”
A senior editor should know the difference between “its” and “it’s”.
I have now 80 days without a restart of my computer… so cannot spoil my record now but will do when XP crashes next time or I move and need to unplug the machine.
What is this? I thought that Window’s selling point is that it is easy to use. This is easy?
I’ve coded a batch file to remove the plugin, plus the accompanying Firefox .NET extension.
This can then be easily added to a login script or such so you can remove it from multiple systems.
You can grab it from my blog here:
http://borchtech.blogspot.com/2009/10/updated-code-on-net-35-network.html