installing 24H2 feature upgrade not completing

[rismoney]

I have been testing on a fleet of computers.

Install-WindowsUpdate -Category "Upgrades" -AcceptAll -Verbose -ForceInstall -ForceDownload -AutoReboot

This will download and install "Windows 11, version 24H2 x64 2025-08B", however the OS next boot installation does not initiate. The system reboots, and reports, it is still on 23H2. Clicking install/Restart in the GUI and retriggering the install works. If that does not work, sometimes clearing out softwaredistribution directory works, and then the GUI Install/Restart. However this never works via powershell.

What am I doing incorrectly or missing here, or is this a bug?

[mike406]

I've come to report the same issue as well. I can't install Windows 11 Feature Updates. PSWindowsUpdate reports that it will be In Progress and will reboot if -AutoReboot is enabled but the upgrade is never actually performed. I don't think you are doing anything incorrectly and that this is either a bug or limitation of some sort.

[softlinknz]

Same issue with 25H2, Can see $Windows.~BT folder created, setupact.log file seems to end gracefully only minor errors shown in setuperr.log file. But machine never kicks into next phase, just sits there. Rebooting device doesn't trigger the install.

Are Feature updates supported for this?