I was asked for help with an Exchange Server 2013 CU6 on Windows Server 2012 R2 which was behaving in an odd way. Wanting to patch it, I found out that .NET Framework 4.7.02558 is installed. (that's what it sais in HKLM\Software\Microsoft\NE
T Framework Setup\NDP\v4\Full)
Trying to install CU18 or CU19 I get first thing: .NET Framework 4.5 or higher is required to install Exchange Server.
I read this:
The named KB3186539 and KB3186568 are NOT installed (at least I can't find them in the list - it seems to stop at KB37... and then carries on with KB40... There is only one or two KB38...-Patches in the list.
Don't know what to do now. Any ideas?