C # cannot build the solution, System.InvalidOperationException: This implementation is not part of the Windows platform FIPS-validated cryptographic algorithm.

After today, suddenly the project can not run, and reported a lot of mistakes, I map out to everyone to see

I turned over the internet a lot, and finally my teacher told me that there is a problem with the registry. The problem is the second-to-last anomaly, and that's the deal.

Win+r, type "regedit", enter to open the Registrar, and then enter the following path:

Hkey_local_machine\system\currentcontrolset\control\lsa\fipsalgorithmpolicy

Double-click on the right enabled and set him to 0. Remember to restart the project Oh!

C # cannot build the solution, System.InvalidOperationException: This implementation is not part of the Windows platform FIPS-validated cryptographic algorithm.