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Corrupted task scheduler in Win 8.1

Anonymous
2022-12-22T16:32:35+00:00

I'm using Win 8.1 Pro. The task scheduler is corrupted. It won't run any tasks (including system tasks) after using a 3rd party optimizer app. I have uninstalled the app and restored the system using a restore point that was made before installing that app, and yet the task scheduler still won't run any tasks at all.

I tried the solution in the following post (Yes I know it's related to Win 7 instead but the issue is the same, corrupt task scheduler.) to run a command that creates a test task which writes date stamp into a text file:

https://answers.microsoft.com/en-us/windows/forum/all/how-can-i-repair-a-corrupted-task-scheduler-in/863fa099-0714-4dad-9e1d-f972b008f972

But the task scheduler only creates the task but cannot run it. This is the output result after running the command

And these are the event log from task scheduler after running the command

If I manually run the Test Task through task scheduler, I got this error

which is the same error I get when manually running any other existing tasks through task scheduler. Hence the reason why I think the task scheduler is corrupted. If so, how to fix it? However, the solution from the post mentioned above says this might be a flawed shadow volume service problem rather than a corrupted task scheduler service. If so, how to fix that problem too?

Windows for home | Previous Windows versions | Apps

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Anonymous
2022-12-23T08:01:45+00:00

I only have Refresh or a Repair Install.

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  1. Anonymous
    2022-12-22T17:11:44+00:00

    Very bad idea to use any optimiser, if it has an undo option then use that, or if you created a restore point prior to using that tool then use that

    And uninstall that tool

    Then there is the sfc/Dism process

    Use the System File Checker tool to repair missing or corrupted system files - Microsoft Support

    And further woes

    Win8.1 goes out of support Jan 10 2023 and as of that date no updates of any type

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  2. Anonymous
    2022-12-22T20:20:28+00:00

    I did the sfc scan and it repaired some corruption without a problem (Please refer to my reply to Palcouk) but the issue with task scheduler still persists. And about the refresh option, I'd really want to hold that off for now (Reset is out of the question). It'll be within my to do list only when it's the last option left because I have a lot of third party programs and drivers installed in this PC of mine that I still want to keep and I don't want to be bothered to have them removed after the refresh which is quite a hassle because it only "keeps the apps that came with your PC and the apps you installed from the Microsoft Store." from what I found here (and ofcourse from your provided links as well, thanks for that): https://www.google.com/search?client=firefox-b-d&q=what+happens+to+my+apps+when+refresh+pc+win+8.1

    https://support.microsoft.com/en-us/windows/how-to-refresh-reset-or-restore-your-windows-8-1-pc-51391d9a-eb0a-84a7-69e4-c2c1fbceb8dd Is there any other options to repair task scheduler besides refresh? Thanks.

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  3. Anonymous
    2022-12-22T20:06:04+00:00

    Yes I deeply regretted using the optimizer tool. It indeed saddens me that the support for 8.1 will end soon. I'm among the few that loves this version of windows (not because of the start menu ofcourse) for its stability and compatibility with my PC. I might still use it regardless after end of support.

    Anyway, I already did the first three things you suggested (the undo option, restore point, and uninstalled the tool) the moment I discovered the issue. I have just now done the sfc/Dism process and it found 1 CSI Payload Corruption and 1 corrupted file which were successfully repaired by the scan.

    I don't think those 2 corruptions solved the issue because after that I did a restart and still the task scheduler won't run tasks while giving same error as shown in my first post. Any other repair suggestions to fix the task scheduler? Thanks.

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  4. Anonymous
    2022-12-22T19:50:35+00:00

    Each Method/step below progresses to the next if the first does not fix any corrupted files that are found, etc.

    Have you read this Microsoft information about repairing corrupt system files and errors?

    "Use the System File Checker tool to repair missing or corrupted system files"

    https://support.microsoft.com/en-us/kb/929833

    _________________________________________________

    And these eightforums.com Tutorials are very detailed for problems resulting from SFC Scan:

    "How to Run "SFC /SCANNOW" Command at Boot or in Windows 8 and 8.1"

    http://www.eightforums.com/tutorials/3047-sfc-scannow-command-run-windows-8-a.html

    Read this Section there in conjunction with the rest of the information they give in above link.

    Image   Note

    If SFC could not fix something, then run the command again to see if it may be able to the next time. Sometimes it may take running the sfc /scannow command 3 times restarting the PC after each time to completely fix everything that it's able to.

    If not, then run the **Dism /Online /Cleanup-Image /RestoreHealth**command to repair any component store corruption,

    Repair-WindowsImage -Online -CheckHealthRepair-WindowsImage -Online -ScanHealthRepair-WindowsImage -Online -RestoreHealth

    Restart the PC afterwards, and try the sfc /scannow command again.

    If still not, then try using OPTION ONE above to run the sfc /scannow command at boot

    If still not, then you could do a **refresh** of Windows 8, or run a **System Restore** using a restore point dated before the bad file occured to fix it. You may need to repeat doing a System Restore until you find a older restore point that may work.

    If still not, then you can use the steps in the TIP box in the OPTION THREE section to manually replace the files that SFC could not fix.

    __________________________________________________

    "How to Refresh Windows 8 and Windows 8.1"

    http://www.eightforums.com/tutorials/2293-refresh-windows-8-a.html

    Refreshing your PC goes like this:

    • The PC boots into Windows RE (Recovery Environment).
    • Windows RE scans the hard drive for your data, settings, and apps, and puts them aside (on the same drive).
    • Windows RE installs a fresh copy of Windows.
    • Windows RE restores the data, settings, and apps it has set aside into the newly installed copy of Windows.
    • The PC restarts into the newly installed copy of Windows.

    _________________________________________________

    "How to Reset Windows 8 and Windows 8.1"

    http://www.eightforums.com/tutorials/2302-reset-windows-8-a.html

    "When you reset your PC, the drive will be completely reset, and all your apps and files will be removed from it. Windows 8 will be reinstalled, and you'll need to change any settings and reinstall any apps that you want to get back after resetting. If you know if any files that you don't want to lose, then you should back those files up before starting the reset"

    Cheers.

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