Hi, I install Exchange 2007 64 bit CAS and HUB roles on one server and going to install mailbox server.I wants to install active-passive mailbox roles on two different servers.I install windows cluster successfully on these servers. But while installing Active mailbox role on active node i am facing following error. Error code 2147504141 and message is the property cannot be found in cache. And installation fails to start. Any solution for this problem.

Did you check the cluster? http://www.msexchange.org/articles_tutorials/exchange-server-2007/high-availability-recovery/exchange-cluster-checks-clusprep-clusdiag-part1.html Deli