I stumbled upon a very strange error when trying to compile one of our projects lately:
Try 1: Use the command line to get more information
I tried to execute the suggested command line in the second error by myself as an admin - no use. I got the same error ;)
Try 2: Checking the NuGet version and updating the NuGet Package Manager
I check with Visual Studio 2013 what NuGet version I have:
And - lo and behold! I have installed NuGet v 2.8.5! So why is it complaining?
I tried to uninstall and freshly install the NuGet Package Manager - no use.
Try 3: SOLVED - Update nuget.exe manually
Visual Studio is keeping its own nuget.exe for each solution (!) in a directory located at $(SolutionDirectory)\.nuget\nuget.exe along with a .targets and a .config file. In the targets-file you even see at the bottom a task "DownloadNuGet" that fetches the new version of nuget.exe.
Download the file manually from nuget.org (it is located at https://www.nuget.org/nuget.exe) and copy it in the given directory. Then restart Visual Studio.
I am pretty sure, there is a more elegant version of updating nuget.exe for any given solution - and I couldn't actually locate the nuget.exe Visual Studio is actually referring to when it says in Tools -> Extensions and Updates that it has the NuGet Package Manager 2.8.5 installed.
Anybody can help me out here?