Recently, CSS was requested by a client to implement an AD FS 2.0 (ADFS) federation solution to meet a very unique security requirement associated with scenarios of external access to internally hosted services.
So one of your users has received an error from AD FS 2.0, and you need to determine what the problem is. Unfortunately, sometimes the error message doesn't give much of a clue—for example the web page shown below.
So you want to make some of your applications available using federation but you have multiple forests. What can you do? Well, if you have two-way trusts between your forests, you’re in luck, because AD FS works very well if you h [...]