Member Avatar for C0ding

Hello everyone,

Few days ago i faced this issue: "Task Scheduler Engine has stopped working" my first thing that came into my mind was to go to Services and check how this services was there, but for surprice, the services was active and all grayed out. so then there was nothing i could do at that moment. then my second solution was to come out with this other trick which is this command at command prompt, this is that command:
bcdedit.exe /set {current} nx AlwaysOff
then reboot the system, but didn't work either. now i was wondering if any of you had seen this before, and of course, if there is a solution for this issue, of course better than the one i had tried, any help will be very appreciate, thanks in advance.

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A compact, practical checklist that supplements and with focused diagnostic steps and safe fixes for a failing Task Scheduler engine. The goal is to gather concrete error data first, then try non-destructive repairs (file/permission fixes, system file checks) before escalating to repairs or reinstalls.

Start by capturing what the system logs say: open Event Viewer (eventvwr.msc) and inspect Windows Logs → Application and System for Task Scheduler–related errors. Note Event ID, faulting module name and exception code — those three items are the most useful clues for root cause analysis. Next, confirm the scheduler service state and its dependencies from an elevated prompt:

sc query schedule
sc qc schedule

Run integrity checks (run elevated). sfc is safe on most versions; use DISM on Windows 8/10/11 if available:

sfc /scannow

DISM /Online /Cleanup-Image /RestoreHealth

Create a restore point before any permission or registry changes.

Common file/permission fixes (backup first). Copy the Tasks folder to a safe location, then reset ownership/ACLs if tasks are inaccessible or corrupted:

robocopy "C:\Windows\System32\Tasks" "C:\TasksBackup" /E
takeown /f "C:\Windows\System32\Tasks" /r /d y
icacls "C:\Windows\System32\Tasks" /reset /T /C

If individual task XML files appear malformed, move them out of the Tasks tree to let Scheduler recreate defaults.

For interference from third-party software, repeat checks from Safe Mode or a clean-boot environment (building on ’s suggestion). Advanced steps include re-registering Task Scheduler COM components (regsvr32) only if specific DLL errors appear, or performing a repair install when system files cannot be fixed.

Caution: always back up the Tasks folder and registry keys related to Task Scheduler before editing. Event Viewer details (EventID + module) typically point to whether the problem is a corrupt task XML, permission fault, missing system binary, or third‑party fault — follow that evidence rather than guessing.

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Member Avatar for rubberman

Can you boot into safe mode and run a virus scanner on your system?

Member Avatar for C0ding

Hi rubberman,

But the laptop affected with this issue, is a laptop that i ran system recovery, in other words is 0% free of any infection at all, actually i didn't get to connect this laptop to the internet, or to install applications, like office, and so on, the problem just came out no where, and actually this is the first laptop i have seen with this issue.

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