Has anyone ever setup the WIM/EIM 4.3(X) in a single/collocated deployment model? Our web server is in the DMZ zone and it is in a Workgroup. Then the rest of the server components stays in the IPCC domain and it is in a separate network vlan. I was unable to view the default/system partition web page and the error given was "The page cannot be display... http 500 error".
You have probably opened a TAC case by now but if not then the below is not supported. The Webserver and Application server need to be in the same domain. I had the same problem and had to put both services in the DMZ domain to get everything working. It does mention this in the documentation. The other way around the issue is to put the servers in two different domains and then setup a trust between them. That will also work.