Microsoft has provided updated guidance for customers running outdated Exchange Server cumulative updates and .NET Framework versions.
December 2017 Updates Released for Exchange Server
Microsoft has released new cumulative updates for Exchange Server 2016, 2013, and 2010 in December 2017.
September 2017 Updates Released for Exchange Server
September 2017 – Microsoft has released new cumulative updates for Exchange Server 2016 and 2013.
June 2017 Updates Released for Exchange Server
Microsoft has released new cumulative updates for Exchange Server 2016 and 2013.
.NET Framework 4.6.1 and Exchange Compatibility
The Microsoft Exchange team has issued a warning to customers to not install .NET Framework 4.6.1 on Exchange servers.