Team Foundation Service build fails on NuGet package restore

Question

I\'m having kind of an odd problem with my Team Foundation Service build. I queue it up and it starts just fine, but then it fails with the following error:

Answer 1

I have seen the similar problem in a Xamarin project and doing the following steps fixed my problem;

1. Set project mode to Release and Rebuild All
2. Set project mode back to Debug and Rebuild All
3. Problem sorted.

Weird but worked for me, hope it helps.