I have been a Windows 10 Insider since inception without any real issues. Post updating to Build 18323 I can't sign into my SurfaceBook 15. When it recognizes me via Windows Hello it says "Before you can start using Windows Hello, you have to set up a PIN" (I have had a pin for years). When I try to sign in via my username on my primary Microsoft account that I have used on the PC it says the password is wrong.
I have tried booting into safe mode (without success) and have tried rolling back to prior version without success. Any help is greatly appreciated.