Can't Update or Uninstall NuGet Package Manager in VS2012

Question

I am unable to update or uninstall the NuGet Package Manager for Visual Studio 2012. I\'ve looked around to several solutions, but have not found one that works.

Ru

Answer 1

Source:

• http://www.paraesthesia.com/archive/2013/07/30/upgrading-nuget-the-process-cannot-access-the-file-because-it.aspx

This is what helped me:

1. Close all instances of Visual Studio.
2. Go to your global Visual Studio extensions folder. NuGet doesn’t install in your per-user folder; instead, you’ll see it in Program Files. Something like: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\Extensions
3. Look in that folder. You will see a lot of randomly named folders like “sdjfksiov.djd” and so on. Most (if not all) of those are NuGet. You’ll want to be aware of which ones are NuGet and which ones aren’t, particularly if you have other extensions installed. (You can tell if it's NuGet because it'll have a bunch of NuGet.*.dll files in there. If you don't see NuGet stuff in there, you'll want to keep it.)
4. Rename that Extensions folder to something like: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\Extensions_RENAMED
5. Download NuGet directly from the Visual Studio extension gallery.
6. Execute the downloaded NuGet.Tools.vsix file you just downloaded. Don’t do it through Visual Studio. Just double-click the .vsix file to install it.
7. NuGet should successfully install. As part of that install, it will create the Extensions folder again, so you will once again see C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\Extensions
8. Open up your renamed extensions folder and move all of the non-NuGet extensions into the new Extensions folder.
9. Now open Visual Studio. You should see the new version of NuGet installed and working.
10. You can delete that renamed Extensions folder once you’ve verified everything is working.
11. Download VSIX and right click unblock the file and install again

Answer 2

I have VS 2013 Pro installed. What solved this problem for me was to restart into safe mode and re-install NuGet there.

You may also want to look into Adam D's post in the link below (the add-in was blocked by anti-malware software):

Can't Update or Uninstall NuGet Package Manager in VS2012

Answer 3

I'm using VS2010, I ended up fixing this problem by uninstalling NuGet Package Manager via the "Add Remove Programs", and then deleting this directory:

C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\Extensions\Microsoft Corporation\Nuget Package Manager

I could then run the NuGet.Tools.vsix thing ok.

Answer 4

I found a solution for this issue at - https://kc.mcafee.com/corporate/index?page=content&id=KB85636&snspd-1015&locale=en_GB&viewlocale=en_GB

Cause:

The Microsoft Visual Studio (VS) process devenv.exe must be excluded in the EEFF/FRP process exclusion registry key.

Solution: Users with this issue must contact Intel Security Technical Support and quote this article number for assistance with adding the devenv.exe process to the correct EEFF/FRP process exclusion registry key.