Up until a few weeks ago LiveID worked on our site. No changes have been made yet we now get an error when logging on that states.
"A critical error has occurred. server_error".
The site is http://www.21stmd.com. You can try to logon to see the problem.
The HTTP request was forbidden with client authentication scheme 'Anonymous'.&state=Live
[What I've done]
1. Debugged with Fiddler 2 and got the detailed error above.
2. Verified the LiveID settings are correct at
https://account.live.com/developers and ensured the redirect URL was correct (aka its points back to he logon page). Still did not resolve.
2. Updated a local copy to the latest version (7.x) but that did not fix the problem
Someone else also seems to have the problem @ http://www.dnncreative.com/Forum/tabid/88/aft/34166/Default.aspx