Last year we installed a server which has been running pretty well up until now.
The server runs Exchange 2013 and Microsoft Server 2012 R2 all in one box, I guess its a pretty simple setup for most server people.
A couple of weeks ago I had a bad experience trying to activate DirectAccess and VPN - Internal IPs became IPv6 and we could no longer connect to mailboxes locally or remotely, so I rolled back the changes and all began to function again.
Anyway I decided that before repeating the exercise I would upgrade Exchange.
Our current exchange system looks a like this -
Mailbox, Client Access
Version 15.0 (Build 516.32)
Exchange is running within Windows Server - IE. nothing virtualised and only one box, we only have 15 users so not a heavy load .
My question concerns the upgrading of exchange -
Can I just apply the latest service pack, or do I need to up grade in stages?
If the above is not possible can I just apply the latest cumulative updates?
All my customisations were done either using Exchange Shell, or EAC will I loose any of these ?
Many Thanks, Chris Coleman.