Can't install packages with NuGet - 500 internal server error

问题

This makes no sense to me. NuGet was working fine before but now it is throwing a server error when I try to install packages. I've uninstall and reinstall NuGet with the latest, but still no luck.

PM> Install-Package EntityFramework
Install-Package : The remote server returned an error: (500) Internal Server Error.
At line:1 char:16
+ Install-Package <<<<  EntityFramework
    + CategoryInfo          : NotSpecified: (:) [Install-Package], WebException
    + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand

Has anyone seen anything like this? Thanks.

I'm pointed at https://nuget.org/api/v2/ which seems to be live...

回答1:

From NuGetTeam (@nuget) on Twitter https://twitter.com/#!/nuget

We are investigating an issue on the NuGet Gallery servers. We will provide an update shortly. We apologize for the inconvenience.

回答2:

Happened to me too.

Try this:

1. Run VS in admin mode.
2. Uninstall NuGet from Tools->Extension Manager (Extensions and Updates in VS 2015)
3. Delete everything in short %AppData%\NuGet or full-named C:\Users\[YourUsername]\AppData\Roaming\NuGet
4. Reinstall NuGet

回答3:

Retry, it works now over here.

回答4:

Visual Studio has this error sometimes. Try restarting your visual studio (I have 2019). If it still doesn't fix, repair your VS installation. This is certainly for future viewers as I also had this problem and fixed by restarting VS

来源：https://stackoverflow.com/questions/10130333/cant-install-packages-with-nuget-500-internal-server-error