Microsoft Exchange and Active Directory Blog
The current CU15 for Exchange Server 2019, like the CU14, has been released for Windows Server 2025. The CU15 supports the inplace upgrade to Exchange Server SE RTM. However, the Inplace Upgrade only supports the upgrade of the Exchange installation. The operating system cannot be upgraded via Inplace Upgrade. So if you want to upgrade from October 2025 ... Read more
I am now having problems updating to CU15 on the second Exchange 2019 CU14 server. The CU15 setup aborts in my environment on a Windows Server 2022 with January updates at step 4 of 16 with the following error: On the first server, I wasn't quite sure whether the server wasn't still ... Read more
Today Microsoft released CU15 for Exchange Server 2019. CU15 is an important update for Exchange Server 2019: Firstly, it is the last CU to be released for Exchange 2019 and secondly, it brings Exchange 2019 onto the same code base as Exchange Server SE. After the installation ... Read more
The latest Cummulative Update for Exchange Server 2019 has been postponed again Originally, CU 15 for Exchange 2019 was supposed to be released in December 2024, but the release was postponed to January 2025. On the last day of January, a message appeared on the Exchange Team Blog stating that CU 15 had been postponed again. The CU15 will be the ... Read more
