"Service Unavailable" message in CRM 4.0

If you are running Windows 2003 server with a CRM Installation and you get the "Service Unavailable" message, check the application pool for CRM in IIS.

If it's stopped, start it again, and try going to the CRM web page again. If the CRM application pool stops again, it's likely that you've just applied patch KB973917, try removing this patch from the server, reboot, this should fix the problem.

Cheers

Matt