The downloaded code from https://github.com/Azure-Samples/active-directory-b2c-dotnet-webapp-and-webapi does not build properly. Error for Nuget pckgs

I downloaded solution code from https://github.com/Azure-Samples/active-directory-b2c-dotnet-webapp-and-webapi.But when I try to rebuild it, I am getting errr for Owin NuGet package. ['Owin.1.0.1' is not found]I am sure that path for nuget packages are proper in my settings.

Any suggestions?

I added paths for NuGet sources. AlsoI copied Owin 1.0 NuGet package from other solution to this downloaded solution, as well as in C:\Program Files (x86)\Microsoft SDKs\NuGetPackages but it still does not wor.