Hi,
tried updating Exchange 2013 to CU3 last night but it failed on step 14 "Couldn't resolve the user or group "domain/Microsoft Exchange Security Groups/Discovery Management." If the user or group is a foreign forest principal, you must have either a two-way trust or an outgoing trust."
It was late at this stage, so I took it back out of maintenance mode and said I would retry it tonight.
Now, I seem to be stuck in a bit of limbo, it appears from checking the version number that it has in fact updated to CU3, but my ECP and OWA are broken, plus my RPC path keeps trying to change to "Exchange Server\V15\FrontEnd\HttpProxy\rpc". when this changes none of the outlook clients can connect. When I change this back to "Exchange Server\V15\ClientAccess\RpcProxy" they can connect ok. But I keep having to reset this.
I cannot access either ECP or...