Active Directory ValidateCredentials breaks after Windows 10 November update

Question

I have an existing project that uses the following for authenticating locally on dev machine

principalContext.ValidateCredentials("bondjames", "drno", ContextOptions.Negotiate);

Please note this worked fine on Windows 10 up til this morning, am aware of previous issues with this. I installed Windows 10 update 1511 and now it throws a FileNotFoundException. I've read of issues with the update but can't find anything on this.

If I provide an invalid password it simply returns false.

Answer 1

There was a similar issue logged with microsoft connect which suggested it to be missing registry entries in

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion, specifically: RegisteredOwner and RegisteredOrganization. I just put in my name and company respectively. All tests pass now.

Note my issue would appear to have the same root cause as this question which I spotted had reference to same article.