I deployed updated todays to some servers in a DAG that I am deploying and the first two of the servers I installed the updated on removed the Microsoft Exchange Search Host Controller service from services. There is a new service called Host Controller Service for Exchange, but does not start. All indexing on all 48 Database copies is in a failed state.
In the servicestate.15.00.0620.032.xml file I see this new service
-<Obj RefId="855"><TNRef RefId="0"/><ToString>HostControllerService</ToString>-<Props><B N="CanPauseAndContinue">false</B><B N="CanShutdown">false</B><B N="CanStop">false</B><S N="DisplayName">Host Controller service for Exchange </S>-<Obj RefId="856" N="DependentServices"><TNRef RefId="1"/><LST/></Obj><S N="MachineName">.</S><S N="ServiceName">HostControllerService</S>-<Obj RefId="857" N="ServicesDependedOn"><TNRef RefId="1"/><LST/></Obj>-<Obj RefId="858" N="ServiceHandle"><TNRef RefId="2"/><ToString>SafeServiceHandle</ToString>-<Props><B N="IsInvalid">false</B><B N="IsClosed">false</B></Props></Obj>-<Obj RefId="859" N="Status"><TNRef RefId="3"/><ToString>Stopped</ToString><I32>1</I32></Obj>-<Obj RefId="860" N="ServiceType"><TNRef RefId="4"/><ToString>Win32OwnProcess</ToString><I32>16</I32></Obj><Nil N="Site"/><Nil N="Container"/></Props>-<MS><S N="Name">HostControllerService</S><Ref RefId="857" N="RequiredServices"/></MS>
Now, I uninstalled this update and still did not regain my service.
I am still trying to validate if this update is causing the issue, but it was the only Exchange aware update that I applied at this time.
Can anyone confirm this behavior??