CF 9 IIS 7.5 Internal Server Error 500.0

Hello everyone,

I have an issue with the follofing configuration:

Win Server 2008 64-bit

ColdFusion 9 64-bit

IIS 7.5

All works fine till I submit page with about 180 fields or more. In this case I get Internal Server Error 500.0, error code 0x00000000. It looks like IIS can't handle so many variables passes and crashes.

What could be the possible solution?

Thanks,

Anton