Microsoft has released new updates for Exchange Server 2016 and 2019. The hotfix update (HU) is intended to the problems of the previous security updates (SU) from March 2024. In addition to the fixes for the quite numerous problems of the March SU, two new features are also added with this hotfix update:
- Support for ECC certificates
- Hybrid Modern Authentication (HMA) for OWA and ECP
Click here to download the HU:
These problems with the March SU will be resolved:
- Download domains not working after installing the March 2024 SU
- „We can’t open this document“ error in OWA after installing March 2024 SU
- Search error in Outlook cached mode after installing March 2024 SU
- OwaDeepTestProbe and EacBackEndLogonProbe fail after installing March 2024 SU
- Edit permissions option in the ECP can’t be edited
- Outlook doesn’t display unread envelope icon after installing Microsoft Exchange Server March 2024 S… (Note: the fix resolves this issue for new messages, after April 2024 HU or later is installed)
- My Templates add-in isn’t working after installing Microsoft Exchange Server March 2024 SU
- Published calendars might not work with a „This calendar isn’t available“ error after installing March 2024 SU
This problem is not fixed by the HU and will only be fixed in the future:
- Calendar printing in OWA might not work unless CTRL+P keyboard shortcut is used.
The hotfix update can be installed directly, it does not matter if the March SU is already installed. The April HU also contains the security patches of the March SU. The HU is distributed as an optional update via Windows Update, so the installation is probably not automatic (which is generally not a good idea with Exchange updates, see above).
Click here for the article on the Exchange Team Blog:
