2023 H1 Cumulative Update for Exchange Server Released


Last week Microsoft released the 2023 H1 for Exchange Server 2019, also known as CU13. It is the first major CU since the CU cycle was changed last year.

As always it is important to keep Your Exchange Servers up-to-date, see the blog post from the Exchange Team on this: Protect Your Exchange Servers

The latest Exchange Cumulative Update (CU13) is only available for the following Exchange Servers:

  • Exchange 2019

See the list of supported and unsupported versions from Microsoft here:

Credit: Exchange Team Blog

If you are uncertain, about what Exchange Server updates are needed and what current build, your Exchange Servers are running, you can use the Exchange Server Health Checker script to inventory your servers.

If you only have an Exchange Hybrid running, you will still need to update your Exchange environment. You do not need to re-run the Hybrid Configuration Wizard (HCW) after applying updates.

Read more about the CU, on the Exchange Team blog:

Use the Exchange Update Wizard, if any doubt about the upgrade process:

If you manually install the latest CU13 (2023 H1 Cumulative Update) it can be downloaded here:

It is recommended to update your Exchange Servers as soon as possible.

/Happy Patching! 🙂