AD FS Error on Startup indicating no access to Private Keys (Event ID 133)

As part of my “summer project”, a new lab environment for testing and learning, I came across a rather hard to figure out kind of issue. It turns out that AD FS in Windows Server 2012 doesn’t function properly with CNG Certificates (Cryptography Next Generation). I won’t go into details about certificates and cryptography in this post, but I think this might be worth sharing. Continue reading