On-Prem Exchange 2016 and 2019 Anti-Malware Issue

Happy New Year and welcome to 2022! On-prem Exchange 2016 and 2019 anti-malware issue! Mail flowing through on-prem Exchange will have the majority (if not all) messages queued with this… “Last Error: Message deferred by categorizer agent” Though it is stated that this issue started around midnight local times on Sat 1 Jan 2022, messages…

List of Exchange Server 2016 Services Installed

The following is the list of services installed by default for an Exchange 2016 server (mailbox role) and the startup type for each.   SERVICE NAME STARTUP TYPE 1 Microsoft Exchange Active Directory Topology Automatic 2 Microsoft Exchange Anti-spam Update Automatic 3 Microsoft Exchange Compliance Audit Automatic 4 Microsoft Exchange Compliance Service Automatic 5 Microsoft…

Exchange 2016 “500 – Internal server error”

Since it was released in June, I’ve installed Exchange 2016 Cumulative Update 2 (CU2) a few times. After the past 2 installs, I’ve had issues connecting to the admin center and OWA and greeted with a “500 – Internal server error”.   In both cases, I could not find a simple resolution and needed to re-install Exchange (from…