Hi Exchange Team,
I have some feedback for you - installing CU2v2 has been a pretty painful experience for me.
We have 4 Exchange 2013 servers - 3 CAS+Mailbox running a DAG and 1 Mailbox with no DAG for Archive. Since installing CU2, I have been plagued with the following issues.
- All 4 exchange servers randomly blue screening and rebooting - turns out to be the following issue: http://social.technet.microsoft.com/Forums/exchange/en-US/44d1cd98-cba1-4ed0-b0e7-8aa76ee3eabc/bsod-after-creating-dag
- Microsoft Exchange Frontend Transport service wouldn't come back up on one of my 3 CAS servers - I had to disable the anti malware filter and reboot several times and then restart the frontend transport service before I could get any mail to flow through the server.
- The update has trashed my external autodiscover URL's - Error when configuring autodiscover is now "No external URL is available to access this mailbox with Exchange ActiveSync. Your Exchange server configuration needs to be changed to allow access"
I have literally wasted 2 days just trying to get the environment remotely stable and I just keep coming across more and more things that are broken. I am concerned that I now need to verify every single configuration option to make sure nothing else has gone wrong.
I must say, I am not particularly impressed but hopefully the information is useful to help with future cumulative updates.