Type universe cannot resolve assembly: System.Configuration AND Cannot resolve Assembly or Windows Metadata file 'System.Configuration.dll

Question

I am developing UWP App via VS2015 in Win10. My App was running perfect, but just today when I start running my App, even I didn\'t make changes of such ... and It shows 2 error

Answer 1

I ran across this in a somewhat dated build script. It was a build that used one top-level SLN composed of multiple SLN files from numerous projects and efforts. I used to be able to just do,

call nuget restore "%Top_Level_SLN_File%" -Recursive

and trust all the packages were getting restored. Now I have to run,

for /r %%I IN (*.sln) DO call nuget restore "%%~I" -Recursive

It might have to do with the fact that a private nuget feed is being leveraged for some of the packages, but that might be a red herring. I haven't deep-dived the issue to get minimal repro steps.