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!
Windows 11 not updating to Windows 11 Insider Preview Feature Update (26220.7051)
Respected Madams/Sirs, I am facing a very unexpected problem while updating to Windows 11 Insider Preview Feature Update (26220.7051), which encounters an error and says, "couldn't extend system reserved partition". My disk has a lot of free space available, but the EFI, of course, was full with 6mb left, so I had to extend its capacity. To fix this, I tried numerous methods, but they eventually proved fruitless. Tried extending the EFI size (currently 100 MB) using GParted, but couldn't, so created a new EFI with a 500 MB size. Executed the necessary steps and commands to make sure the computer used the new EFI as its primary EFI. The computer boots using the new EFI, but the update error hasn't gone. Tried clearing unnecessary files from the original EFI. Nothing worked. Tried cleaning my hard disk, which of course might not be the key for this since the error is related to EFI, not the hard disk itself. Still, nothing worked. To put it short, I may have tried every method possible, but nothing has worked. I urgently require assistance. My current Windows version is Windows 11 Home, version 24H2, OS build is 26120.6982, on a Dell Inspiron Laptop Please help. Thanks!Cannot update my window from 24H2 to 25H2
Hi, I faced problem that I cannot update to 25H2 from 24H2 the error is "We couldn't install this update, but you can try again later (0x800f0983) Solution that already tried (with Microsoft Support) DISM.exe /Online /Cleanup-image /Restorehealth --> No error sfc /scannow --> No error chkdsk /f /r C: --> No error in place update (reinstall window but keep personal files) --> got this error "Error 0x8007042B - 0x2000D - Installation failed in the SAFE_OS phase with an error during MIGRATE_DATA Operation" have anyone faced this problem before and how to fix?
Window10, Update in Setting dont work correctly
The PC Health Check tool showed that my system meets the requirements. However, the Windows 11 Installation Assistant says I need to update to Windows 10 version 2004 or higher before I can upgrade to Windows 11. But when I open Windows Update, the window doesn’t display anything. What should I do to upgrade to Windows 11? I want to keep my software and data, so I don’t want to install from an ISO file.Microsoft Defender fails to update from File Share
Hello! I've tried to configure my Windows system to use Defender Updates through File Share. On my domain controller I've set two GPOs to make it possible. Define file shares for downloading security intelligence updates -> \\fileserver\DefenderUpdates Define the order of sources for downloading security intelligence updates -> FileShares When running the command Get-MpPreference I can see that the GPOs were successful with the following output: SignatureDefinitionUpdateFileSharesSources : \\fileserver\DefenderUpdates SignatureDisableUpdateOnStartupWithoutEngine : False SignatureFallbackOrder : FileShares The file structure on the file share looks like the following: \---DefenderUpdates \---x64 mpam-fe.exe Then I tried to run the command Update-MpSignature and I get the following error message: Update-MpSignature: Virtus and spyware definitions update was complated with errors. At line:1 char:1 + Update-MpSignature + + CategoryInfo : NotSpecified: <MSFT_MpSignature:ROOT\Microsoft\...SFT_MpSignature> [Update-Signature], CimException + FullyQualifiedErrorId : HRESULT 0x8024402c,Update-MpSignature This has worked previously but I don't know what has changed. Does any one have a clue? Best regards, dedicated-worker.I was told by a Microsoft assistant to come here for help regarding an insider update issue.
As the title reads, a Microsoft assistant told me to consult this community regarding the issue I am facing now. A while ago, I foolishly did not read the fine print and opted into the dev channel of the insider program, because I was having difficulty installing Windows 11. I later found out to my horror that, I could not opt out until a particular window was announced. I have been waiting since then, and updating my computer in hopes that one of these updates will allow me to swap back to the beta channel, and then, hopefully to a stable version of Windows. When I attempted to update today to the "Cumulative Update for Windows 11 Insider Preview (10.0.26120.2705) (KB5050636)", I received the "Install error - 0x800f081f" message, and all the results I have searched have so far given me nothing but pieces of advice that make me fearful for the safety of my computer data. Is there anything I can do that will not run the risk of data deletion, or is it hopeless? I feel like I've run down every alley here. Thank you.Update windows 11 impossible depuis build 22631.3235
Le support windows me demande de faire la demande ici car j'ai une update du programme Windows insider preview. Mon probleme depuis mars 2024, je ne peux faire les update windows updates. Toutes finissent en erreur à 96%. J'ai un message d'erreur "tout ne s'est pas passer comme prévu...." Depuis 9 mois, lors de redémarrage windows les updates tentent de s'installer et échouent en boucle. Ma version est windows 11 version 23H2 build 22631.323500 L’installation échoue lorsque le téléchargement de la mise à jour atteint 96 %. À la suite de cette erreur, le message suivant s’affiche : « Quelque chose ne s’est pas allé comme prévu. Vous n’avez pas à vous soucier de l’annulation des modifications. Veuillez garder votre ordinateur allumé ». Et la boucle recommence.
