Exchange 2019 2023H1 CU is here

After nearly one year Microsoft released another CU for Exchange 2019 Onpremises. Exchange 2016 receives security updates only. See the link to the official announcment here. Exchange Server 2019 Cumulative Update 13 (KB502099), VLSC Download, Download Installation was quite simple, but there is a schema upgrade to be done. If you want to execute this manually you …

Incoming mails as attached file if the mail is signed

Some time ago I configured an external E-Mail banner which works like a charm. After setting up there was one issue with incoming, signed mails, because these were “attached” as file to an mail with the new email banner. If you like to setup the email banner see this blogpost. To create a workaround (not …

Exchange Server March 2023 Security Update SU

Microsoft published another Exchange Security Update for all supported versions of Exchange Server. See the Exchange Team Blog. Procedure for updating is not changed, just have a look at the picture below. Here are the official Download Links: One interesting fact is the CVE for Outlook: CVE-2023-23397In addition to the CVE Microsoft created a script …

Exchange Toolbox Unhandled Exception – Deserialization fails

UPDATE 15/03/2023: After Installation of MS Exchange SU March 2023 the issue is resolved! Download Links March 2023 SU Exchange Exchange Server 2013 CU23 (note that support and availability of SUs end on April 11, 2023) Exchange Server 2016 CU23 Exchange Server 2019 CU11 and CU12  Some people may recognize an error when entering the good old Exchange Toolbox they receive a …