The term “Add-Migration” is not recognized

Question

I\'m using this MSDN Tutorial to run in VS2015 the command PM> Add-Migration MyFirstMigration -context BloggingContext that ran yesterday successfully but to

Answer 1

I had this problem in Visual Studio 2013. I reinstalled NuGet Package Manager:

https://marketplace.visualstudio.com/items?itemName=NuGetTeam.NuGetPackageManagerforVisualStudio2013