I\'m currently building an ASP.NET 5 (ASP.NET Core 1.0) MVC application. I\'m using Visual Studio 2015 with ReSharper Ultimate 10.0.2.
I currently have a 2-tier layer so
For me I got to reinstall MSBuild. Then it worked again.
Looks like Jetbrains is aware of this: youtrack.jetbrains.com/issue/RSRP-408661
However, it gave me an idea. I set CopyLocal on the assembly to "true" and now my references resolve.
In Visual Studio 2017 I solved in this way:
I had the same issue with v2017.1. Spent some time trying different solutions like clearing cache, suspending and resuming, but no success.
What helped me: I updated to v2017.3.1 (latest on time of writing). So if you facing a problem which you cant fix by simple suspending or clearing cache, consider updating to latest version, probably it was a small bug, and now it is fixed.