Windows 10: Errors by opening Task Scheduler Solved

  1.    07 Aug 2015 #1

    Errors by opening Task Scheduler


    Hello.


    When I open the Task Scheduler, I get many error messages, which mostly resemble to "Task Name: The task object version is either unsupported or invalid" along with a few "The selected task 'Name' no longer exists. To see current task, click Refresh".

    One thing I noticed, the tasks were all/mostly (I haven't fully checked) outside the "Microsoft" folder under "Task Scheduler Library" based on my research into the Registry Editor. I have also deleted a few with a back up for each, but, if I try to restore the registry files with elevated rights, I get an error message: "This app can't run on your PC - To find a version with your PC, check with the software publisher". This includes the "regidlebackup" task which I shouldn't have deleted, but it does not want to be restored.

    I don't think this occurred before I upgraded to Windows 10 from Windows 7.
    Also, I could revert back to Windows 7, but the problem is if this issue would be solved by doing so.


    Computer Specifications:
    Dell, XPS 8300. Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz 3.40GHz.
    12 GB RAM, 64-bit Operating System, x64-based processor.


    I have tried listing the tasks (before the changes in RegEdit) into a text file. For privacy, I have replaced my name by "????".
    test.txt


    Edit: Solution found.
    Due to no one responding after 2 days or so, I took the risk of deleting the entries corresponding to the tasks' name in the registry after having exporting each entry. So far, the computer seem to work even after a restart and the Task Schedule shows no error after being opened and the logs/windows in the middle also work.

    From my guess, upgrading to Windows 10 failed to delete the old entries after re-arranging them in the registry.
    Last edited by TaskSchedule; 09 Aug 2015 at 13:41.
      My ComputerSystem Spec

  2.    08 Aug 2015 #2

    Bump... seeing how this isn't on the first page anymore, waited 24 hours and not a single help yet.
    Still having this issue after several restarts...
      My ComputerSystem Spec

  3.    21 Aug 2015 #3

    TaskSchedule said: View Post
    Hello.


    When I open the Task Scheduler, I get many error messages, which mostly resemble to "Task Name: The task object version is either unsupported or invalid" along with a few "The selected task 'Name' no longer exists. To see current task, click Refresh".

    One thing I noticed, the tasks were all/mostly (I haven't fully checked) outside the "Microsoft" folder under "Task Scheduler Library" based on my research into the Registry Editor. I have also deleted a few with a back up for each, but, if I try to restore the registry files with elevated rights, I get an error message: "This app can't run on your PC - To find a version with your PC, check with the software publisher". This includes the "regidlebackup" task which I shouldn't have deleted, but it does not want to be restored.

    I don't think this occurred before I upgraded to Windows 10 from Windows 7.
    Also, I could revert back to Windows 7, but the problem is if this issue would be solved by doing so.


    Computer Specifications:
    Dell, XPS 8300. Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz 3.40GHz.
    12 GB RAM, 64-bit Operating System, x64-based processor.


    I have tried listing the tasks (before the changes in RegEdit) into a text file. For privacy, I have replaced my name by "????".
    test.txt


    Edit: Solution found.
    Due to no one responding after 2 days or so, I took the risk of deleting the entries corresponding to the tasks' name in the registry after having exporting each entry. So far, the computer seem to work even after a restart and the Task Schedule shows no error after being opened and the logs/windows in the middle also work.

    From my guess, upgrading to Windows 10 failed to delete the old entries after re-arranging them in the registry.
    I have the same problem. Can you tell me where you found these entries in the registry? I can't seem to find them.

    Did you delete everything out of c:\windows\system32\tasks as well?
      My ComputerSystem Spec

  4.    23 Aug 2015 #4

    I think it's here:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree

    Create a backup or multiple backups, find the name of the task which gives you an error (ie: the first popup from opening Task Scheduler), delete it and see if the error disappears. If it does, continue on. If not, try to import the backup.

    I had 1 or 2 exceptions where the file or folder was within another (ie: ...\TaskCache\Tree\Microsoft\Windows\Media Center), which I deleted with no apparent errors so far. So that might be the case if you don't find it.

    I did not touch anything in C:\Windows\system32\Tasks.

    Good luck and hope this resolves your issue.
      My ComputerSystem Spec

  5.    24 Aug 2015 #5

    TaskSchedule said: View Post
    I think it's here:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree

    Create a backup or multiple backups, find the name of the task which gives you an error (ie: the first popup from opening Task Scheduler), delete it and see if the error disappears. If it does, continue on. If not, try to import the backup.

    I had 1 or 2 exceptions where the file or folder was within another (ie: ...\TaskCache\Tree\Microsoft\Windows\Media Center), which I deleted with no apparent errors so far. So that might be the case if you don't find it.

    I did not touch anything in C:\Windows\system32\Tasks.

    Good luck and hope this resolves your issue.

    Perfect! Thank you. It was the Media Center ones I couldn't find.

    -Tim
      My ComputerSystem Spec


  6. Posts : 3
    Windows 10 Home 32 bit
       08 Sep 2015 #6

    tmm0f5 said: View Post
    Perfect! Thank you. It was the Media Center ones I couldn't find.

    -Tim
    Hi guys,

    I've been suffering similar issue myself recently and especially relating to Windows Media Center Tasks. I found this post earlier which should help. By all accounts upgrading to Windows 10 has an issue whereby old registry keys are not removed and irrelevant tasks continue to populate the task manager. The link below will help solve that.

    http://answers.microsoft.com/en-us/w...e2aeb94?page=3
      My ComputerSystem Spec

  7.    26 May 2016 #7

    Worked for me


    This worked for me with no obvious ill effects

    TaskSchedule said: View Post
    I think it's here:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree

    Create a backup or multiple backups, find the name of the task which gives you an error (ie: the first popup from opening Task Scheduler), delete it and see if the error disappears. If it does, continue on. If not, try to import the backup.

    I had 1 or 2 exceptions where the file or folder was within another (ie: ...\TaskCache\Tree\Microsoft\Windows\Media Center), which I deleted with no apparent errors so far. So that might be the case if you don't find it.

    I did not touch anything in C:\Windows\system32\Tasks.

    Good luck and hope this resolves your issue.
      My ComputerSystem Spec

  8.    29 Aug 2016 #8

    Once you completed this "fix"... Did Windows "re-recognize" the Scheduled Task based on the XML file buried in the Tasks Folder?
    Or was it "truly deleted"?

    And, if it were gone, were you able to import it from the XML in Tasks?

    The reason I ask is that (at least one of) the corrupted tasks is one I depend on (its my personal backup task...) I need to know whether or not I need go through extraordinary lengths to make sure I can re-do the task...
      My ComputerSystem Spec


 

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