I am seeing more ways to get an HTTP 500 error out of IIS… I do want to go on record and point out that when IIS configurations prevent RMS from working it really isn’t an RMS issue. I concede the point that you don’t care why your RMS isn’t working, you just want it fixed. I’ll help as best I can.
In earlier blog entries I pointed out two separate cases of the 500 errors when trying to get to the RMS server.
Both the earlier instances had a common cause – the client SSL settings in IIS. In this new case we have a whole new symptom and cause, with the 500 error playing a key role.
Check out the wiki entry, AD RMS Console – "You cannot access the AD RMS administration service at this time" for all the details!