I have 2 exchange 2013 servers with 4 DBs each, exch one has 2 active mounted and 2 passive healthy.
This morning I found that all 4 DBs are mounted on ExServer2, the 4 DBs on ExServer1 are healthy but their Content index state is unknown.
1. I could active the 2 DBs back to ExServer1, I get an error about the content index state that is unknown
2. Suspend/Resume did do anything
3. Suspend/Update stated movind file and I the end I get an error:
Seeding of content index catalog for database 'DB4' failed. Please verify that the Microsoft Search (Exchange) and the Host Controller service for Exchange services are running and try the operation again. Error: Could not connect to net.tcp://localhost:3863/Management/SeedingAgent-6BCDDF4B-88E9-47CE-8EB6-836714D1AE9912/Single. The connection attempt lasted for a time span of 00:00:02.0313113. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:3863. .
Checked: all services are running.