First, ColdFusion is one word.
Second, what is a WIndows 8 server?
Third, and most important, you have provided ZERO detail. We can't help you if you don't provide something other than "none of our cfm web pages work". ColdFusion has logs (<coldfusionDir>/logs) JRun has logs (<coldfusionDir>/runtime/logs). Even if the Windows event viewer shows nothing, there should be info in those log files about what is going on.
Good luck,
Jason
Message was edited by: m.m.murphy