After cancelling the install for Exchange 2013 CU5, users can no longer connect to IMAP.
Issue: The attempted install of Exchange 2013 CU5 was cancelled during the install process. Afterwards users could not connect to the secure imap service.
Troubleshooting/Resolution: From powershell type,
Get-servercomponentstate servername. Found out Imap proxy was in an inactive state.
Resolution: This registry fix(though not recommended by microsoft)
resolved the issue. go to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v15\ServerComponentStates\serverwideoffline
backup the servercomponentstates key
remove maintenance key
change functional key from 1:0:635407213073684026 to
1:1:635407212984929845 (Note that guid value is unique per server).
You are basically changing from 0 to 1 to make the server
active. This activates all the inactive components