Today we are re-releasing the November 2024 SUs for Exchange Server. The original release of these SUs (released on 11/12/2024) introduced an issue with Exchange Server transport rules stopping after...
Updated Jan 28, 2025
Version 11.0
Blog Post
LukasSMSFT
Microsoft
MicrosoftWe’ve published a KB for the new known issue. Please follow the steps mentioned in the workaround section and let us know if they’re working for you.
One thing that seems like it should work for this is to make a backup copy of the IanaTimeZoneMappings.xml file before you install KB5049233, and then after the KB has installed but before you reboot the server, put the backup copy (essentially the original file) back in place. That precludes the need to restart the services. You're already going to reboot the server, so just do the file switching before you reboot.
I have a process I've used for years to install SU patches (using the MSP file) remotely. I've added this logic to the code and am trying it on a server in the lab now to make sure it results in the file without the duplicated entry in place. (On a different lab server, I ran the install without that logic, and verified that duplicated line is the only difference between the original file and the post-KB file.)
With these steps, I'll have three files - IanaTimeZoneMappings.xml (the pre-KB version), preKB5049233_IanaTimeZoneMappings.xml (the pre-KB version), and postKB5049233_IanaTimeZoneMappings.xml (the post-KB version). Should allow for fallback if the need arises.
- LukasSMSFT
There are some changes in the IanaTimeZoneMappings.xml which were introduced to address: Kazakhstan changes to single time zone in 2024 - Microsoft Support
If you replace the file which is dropped as part of the November 2024 SU, the change would be reverted. What you can do instead is to install the November 2024 SU, remove the duplicate entry and use this IanaTimeZoneMappings.xml then for further installations.
OK. I see that now. I will use a variation of the script provided to remove the duplicate entry instead. Thanks.
