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Task Scheduler Startup Error

    Question

  • Greetings,

    When I try to start Task Scheduler, I get an error message:

    The selected task "{0}" no longer exists. To see the current tasks, click Refresh.

    When I click OK, I get another error:

    Task Scheduler is not available. Task Scheduler will attempt to reconnect to it.

    When I click OK to this error, I get the first error message again. When I click OK to that error message, Task Scheduler starts, but the Task Status says "Reading Data Failed."

    What would cause these errors?

    Thanks,
    Shane.
    Windows 7 Home Premium 32-bit; Internet Explorer 8.0.7600.16385
    Monday, March 15, 2010 2:18 AM

All replies

  • I would recommend to use the System File Checker utility to check for altered system files.


    MCSA/MCTS/MCP
    Monday, March 15, 2010 6:40 AM
  • I ran System File Checker, and it finished saying "Windows Resource Protection did not find any integrity violations."

    Is there anything else I could try?

    Thanks,
    Shane.


    Windows 7 Home Premium 32-bit; Internet Explorer 8.0.7600.16385
    Monday, March 15, 2010 8:08 AM
  • You can try the steps described in troubleshooting taskscheduler . Check your eventlogs to check whether they give a clou of what the issue is.
    check your registry for the key HKLM\System\CurrentControlSet\Services\Schedule start should have a value of "2" to enable automatic start.
    You shoudl also try to review the currently scheduled tasks using the commandline utility Schtasks.exe

    MCSA/MCTS/MCP
    Monday, March 15, 2010 9:02 AM
  • Hi,

    If your problem is :-

    the selected task "{0}" no longer exists

    opening task scheduler have a look at my message in url
     
    http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/error-messege-the-selected-task-0-no-longer-exists/01e60fa1-8004-40b4-9cf0-247fb80edb56?page=3
     
    Hope this helps.

    Jim.
    • Edited by Jimsrply Sunday, March 23, 2014 2:18 AM url changed
    Monday, March 15, 2010 12:27 PM
  • Tasks are stored in C:\Windows\System32\Tasks

    In Registry, related branches are located in:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks

    Tasks tree is stored in:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft

    If any tasks are broken, such issues will occur. You may find a fine system, and check above folder and Registry branches to find which one is lost.

    A simpler way is doing In-place Upgrade to repair the system. Your personal data and programs will not be removed after repair. However I still suggest that you backup important data before repair.


    Arthur Xie - MSFT
    Tuesday, March 16, 2010 7:46 AM
    Moderator
  • You can try the steps described in troubleshooting taskscheduler . Check your eventlogs to check whether they give a clou of what the issue is.
    check your registry for the key HKLM\System\CurrentControlSet\Services\Schedule start should have a value of "2" to enable automatic start.
    You shoudl also try to review the currently scheduled tasks using the commandline utility Schtasks.exe

    MCSA/MCTS/MCP


    All of the troubleshooting steps require you to start the Task Scheduler first. Since Task Scheduler won't start, I can't perform the steps in the article.

    This registry entry is set to 2.

    I've reviewed the currently scheduled tasks in the command line utility, but I don't see anything out of the ordinary.

    Shane.


    Windows 7 Home Premium 32-bit; Internet Explorer 8.0.7600.16385
    Saturday, March 20, 2010 2:39 AM
  • The alternate thread said to compare the Task Schedular with the c:\Windows\System32\Tasks\ folder, and to delete any mismatched items. I started deleting Tasks in Windows Explorer, but eventually the Task Schedular wouldn't start at all.

    I'm going to try to do a repair from my Windows 7 CD, but I'm on holidays right now, so I'll have to wait until I get home.

    Shane.


    Windows 7 Home Premium 32-bit; Internet Explorer 8.0.7600.16385
    Saturday, March 20, 2010 6:43 AM
  • This helped me solve my Task Scheduler error which was related to MediaCenter Updates. The error was "The selected task "{named task}" no longer exists. To see the current tasks, click Refresh."

    I was able to compare the Task Scheduler task list with the c:\Windows\System32\Tasks\ folder, and delete the item in the folder which was not included in the task list in the Scheduler.

    Make sure you look in the correct folder. There is another Tasks folder which is incorrect.

    Thanks.

    Sunday, October 09, 2011 5:47 AM
  • Where was the extra item? Was it in Tasks Schedular, or in c:\Windows\System32\Tasks\?

    Thanks,
    Shane.


    Windows 7 Home Premium SP1 64-bit
    Sunday, October 09, 2011 6:27 AM
  • "I was able to compare the Task Scheduler task list with the c:\Windows\System32\Tasks\ folder, and delete the item in the folder which was not included in the task list in the Scheduler."

    Good luck.

     

    Sunday, October 09, 2011 2:18 PM
  • The only thing I found that didn't match was this:

    C:\Windows\System32\Tasks\HPCeeScheduleForShane

    I've deleted it, but I still have the Task Schedular error.

    Shane.


    Windows 7 Home Premium SP1 64-bit
    Monday, October 10, 2011 9:16 AM
  • I had a similar problem on Win 7 x64. I was able to recover all of my tasks, except for some I did not want (like Media Center... though it appeared that all of the XML Task files were fine). I posted the (rather long) set of steps at http://answers.microsoft.com/en-us/windows/forum/windows_vista-windows_programs/task-scheduler-catastrophic-failure-error/9a262f03-e9b4-4c40-a807-3702f7699beb?tm=1346999925749 (another thread on this same issue). If you still have not found a work around, this might work for you...

    - dennis

    Friday, September 07, 2012 6:50 AM
  • I am getting this same problem. And every time this problem gets solved by "Windows Disk Defragmenter schedule".

    If you also have disk defragmenter schedule on then turn it off then try to open the task scheduler or

    If you also don't have disk defragmenter schedule on then turn it on with any schedule and then try to open the task scheduler.

    Any better?

    • Proposed as answer by shukla44 Wednesday, December 26, 2012 10:52 AM
    Wednesday, December 26, 2012 10:51 AM