I need some advise on updating Exchange 2013.
[Main setup]
Domain:
DC Server 2012 R2 (DFL & FFL 2008 R2)
Exchange:
CAS 2013 on 2012 R2 no CU
MBX01 2013 on 2012 R2 no CU (DAG)
MBX02 2013 on 2012 R2 no CU (DAG)
[Updates]
After the main setup we installed 2013 CU3 for DC compatibility.
[Next update]
We want to install SP1 on the 2013 Servers. Is this recommended? What can go wrong as it is an unsupported configuration. 2012 R2 and Exchange 2013 CU3. Especially WinRM 3.0 vs 4.0.
MBX01 wont go into MMode and its impossible to activate DB on it. We also have lot of warnings and errors on all 3 servers. About diskspace and so on, we are sure diskspace is not a issue.
Can we force SP1 on a 2012 R2 and Exchange 2013 cu3 setup without damaging the Exchange organization? Any recommendations?