Forum Discussion
Windows 11 25H2 – Update KB506881 causes unexpected reboots (no BSOD, silent restart)
Hey everyone,
just wanted to report a serious issue I encountered with Windows 11 25H2 related to the update KB506881.
After installing KB506881 my PC randomly rebooted without warning — no BSOD, no crash report, no error on screen. Only the event log showed “unexpected shutdown / Kernel-Power (Event ID 41)”. Removing the update completely solved the issue. Since uninstalling it, my system has been 100% stable with zero unexpected restarts.
Reproducibility:
Install KB506881 → system performs unexpected shutdowns / reboots
Uninstall KB506881 → issue disappears immediately
System details:
Windows 11 25H2 (Build: 26200)
AMD Ryzen 7800X3D (but issue seems unrelated to hardware)
No BSOD / no memory dump / no bugcheck created
Reliability Monitor only shows “Unexpected Shutdown”
What I already did:
Removed KB506881 manually → issue gone
Blocked the update using PowerShell + scheduled task (hourly) to prevent Windows from reinstalling it
Logs:
Event Viewer → Windows Logs → System
Shows: Kernel-Power 41 (unexpected shutdown) immediately after KB506881 installation.
Has anyone else experienced unexpected reboots after KB506881?
If yes, please comment so Microsoft can see how widespread this is.
I also reported it via Microsoft Feedback Hub.
Thanks!
3 Replies
well here was my issue with the security update KB5068861 patch Tuesday and just to mention i have a brand new pc with windows 11 installed only two weeks old now, anyway all other updates downloaded and installed on my system just fine no problem there, at any rate i tried to download several times this update and to no avail it just would not install on my system, anyway to make this as short as possible i tried everything to no avail it would just not install, i got a little disturbed about this so i got a Microsoft Teck to take control of my pc and i have to mention he new his stuff this Microsoft technician there was no question there, what he did is this he downloaded win_11_25H2_english_64 disk image file and all was well after that it downloaded and installed in no time flat with no problem, the real problem for some unknown reason the security patch above would just not install but all went well after he did this and this is the first time i had to get a ms Teck to look at anything on all the windows operating systems pc's that i have had through the years, but just to mention again this tec guy new his stuff there's no dought about that ,anyway if anyone on the forums here have to go through doing this sometimes to elevate the frustrations, its the way go .
Having same issue on intel hardware.
Yes, on my Surface Go 2, after applying KB5068861, I started to get unexpected restarts, one stating HEAP CORRUPTION, another MEMORY MANAGEMENT.
