I've just reinstalled my computer and hoped to continue my (personal) work on it. Before reinstall everything worked fine. I use the old PCL, etc style, not .netstandard. On the new Windows I installed VS 2017 community (it was 2015 beforehand). Since then whenever I try to compile the code it fails as every non default reference is not found. It does not matter if I uninstall/reinstall the nuget packaget, install the package and give the reference manually, it always says not found. I've even tried with VS 2015 with no success. So basically I cannot make any reference to work.
Any idea what is the problem?