Event details

Ask Microsoft Anything (AMA) about updating Secure Boot certificates on your Windows devices before they expire in June of 2026. We recently published the first version of the Secure Boot playbook, o...
Heather_Poulsen
Updated Dec 09, 2025
AMA
prabhv1982's avatar
prabhv1982
Icon for Microsoft rankMicrosoft
Dec 10, 2025

Is Windows 11 Pro edition where issue is being observed has been updated with latest cumulative updates from Microsoft?  If not, request you to update the client devices to latest available Windows updates and retry applying the policies. 

jhcdoc's avatar
jhcdoc
Copper Contributor
Dec 10, 2025

Our machines are continually updated with Autopatch/Hotpatch, which are up to date. We've tested several up to date machines and see the same errors across the board (Intune deployment error 26000 and Event Viewer error 827 as screenshotted in OP). These machines have been imaged using Win11 24H2 ISO (Pro edition) provided by your software download link for the ISO, then upgraded to 25H2 via Autopatch feature update.