I wrote the following post about the error below that occurs whey you try to install an UWP and Desktop Bridge .NET Application:
Exception type: System.IO.FileNotFoundException Message: Could not load file or assembly 'System.Private.CoreLib, Version=126.96.36.199, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Follows the post:
I hope it helps.