We currently deploy the Semi-Annual channel to our users. On 9 July 2024 there was a new version released: Version 2402 Build 17328.20452.
See: https://learn.microsoft.com/en-us/officeupdates/update-history-microsoft365-apps-by-date
Our clients have been gradually updating to this new version.
However, today I noticed that some clients have rolled back to the previous Semi-Annual version: Version 2308 Build 16731.20716 (from 11 June 2024).
I started doing some investigating/troubleshooting and have discovered that clients with 16731.20716 are reporting that they are "up-to-date", as if no newer version is available.
Furthermore, I have done some testing with the ODT and, if not specified, it will install / download 16731.20716, and not 17328.20452.
Example XML, downloads 16731.20716:
<Configuration>
<Add OfficeClientEdition="64" AllowCdnFallback="True" Channel="SemiAnnual">
.
.
.
If I specify 17328.20452, it will download / install it:
<Configuration>
<Add OfficeClientEdition="64" AllowCdnFallback="True" Version="16.0.17328.20452" Channel="SemiAnnual">
.
.
.
We have the newest version available of the ODT installer (16.0.17531.20046).
However, this really only helps with new installations, and wouldn't help with the systems rolling back to the previous version.
I have double-checked the "release preferences" in the admin portal, just to make sure it had not been changed, but it is still set to "standard release for everyone". But this wouldn't cause systems to roll back, since we have never been on "targeted release for everyone".
I am at a loss trying to determine why this is happening, or how to get it to resume updating the newer version. And I have not been able to determine exactly when the version started rolling back. Sometime last week, but I'm not exactly sure when. I can confirm systems getting the newer version as late as 18 July 2024. So sometime after that is when the problem started.
EDIT: I have been able to determine that it seems to have started sometime between 05:00 CEST (03:00 GMT) today [22 July] and 05:00 CEST (03:00 GMT) yesterday. Our client management system does a daily software inventory at 5:00 and it was first noted today, that the old version was installed.
Has anyone been seeing similar issues?
Regards,
Eric