http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/82f99f9d-e3d6-4bfd-9098-1046934d584b/ Problem is similar to that in link. I un-installed one of two Exchange 2010 servers holding CA, HT and MB roles using add-remove programs. I removed any DNS records pointing to the old server and did what Gen Li recommended in link. Still no luck. EMC will not open: winrm client cannot process request because the server name cannot be resolved. But why is EMC trying to connect to a server that was retired?

By the way, Gen Li's commands result in an error: "no command proxies have been created, because all of the requested remote commands would shadow existing commands. Use the AllowClobber parameter if you want to shadow existing commands." What to do???