NuGet upgrade issue

visual-studio-2010 visual-studio nuget
gfrizzle picture gfrizzle · Jun 27, 2011 · Viewed 27k times · Source

I have the version of NuGet that comes with MVC3 (1.0), but when I try to upgrade to the latest version (currently 1.4) it failes and I get this in the log file:

6/27/2011 1:25:08 PM - VSIXInstaller.SignatureMismatchException: The installed version of 'NuGet Package Manager' is signed, but the update version has an invalid signature. Therefore, Extension Manager cannot install the update. at VSIXInstaller.Common.VerifyMatchingExtensionSignatures(IInstalledExtension installedExtension, IInstallableExtension updateExtension) at VSIXInstaller.InstallProgressPage.BeginInstallVSIX(SupportedVSSKU targetAppID)

6/27/2011 1:25:08 PM - Install Error : VSIXInstaller.SignatureMismatchException: The installed version of 'NuGet Package Manager' is signed, but the update version has an invalid signature. Therefore, Extension Manager cannot install the update. at VSIXInstaller.Common.VerifyMatchingExtensionSignatures(IInstalledExtension installedExtension, IInstallableExtension updateExtension) at VSIXInstaller.InstallProgressPage.BeginInstallVSIX(SupportedVSSKU targetAppID)

6/27/2011 1:26:27 PM - VSIXInstaller.SignatureMismatchException: The installed version of 'NuGet Package Manager' is signed, but the update version has an invalid signature. Therefore, Extension Manager cannot install the update. at VSIXInstaller.Common.VerifyMatchingExtensionSignatures(IInstalledExtension installedExtension, IInstallableExtension updateExtension) at VSIXInstaller.InstallProgressPage.BeginInstallVSIX(SupportedVSSKU targetAppID)

I even tried uninstalling NuGet (via Add or Remove Programs) and installing 1.4 manually, but I inexplicably get the same message. Any idea what I'm doing wrong?

Answer

juFo picture juFo · Dec 28, 2011
  1. Close all visual studio 2010 instances.
  2. Open visual studio again as administrator
  3. Go to "Tools" > "Extension Manager"
  4. Uninstall NuGet
  5. Install NuGet again.

if you are not able to uninstall it go to:

C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\Extensions\Microsoft Corporation\NuGet Package Manager

and remove this folder. deleting this is at your own risk!

Related questions

This project references NuGet package(s) that are missing on this computer

I have an ASP.NET MVC5 application that worked yesterday and now I am getting this error when I try to build: This project references NuGet package(s) that are missing on this computer. I have the two options checked …

Read More
How do I install a NuGet package into the second project in a solution?

I'm currently working on a solution that initially contained one project (My.First.Project.Name). I've installed Castle Windsor by executing: Install-Package Castle.Windsor I've just added another project (My.Second.Project.Name) to the solution and want to install …

Read More
remove nuget package restore from solution

I added the recent nuget package restore feature to a solution using 'Enable NuGet Package Restore': http://docs.nuget.org/docs/workflows/using-nuget-without-committing-packages However it broke my build server and I didn't have the time to fix it, so I …

Read More