Windows 8 and 8.1 Forums


Scheduled Task wakes computer up, BUT does NOT run?

  1. #1


    Posts : 2
    Windows 8.1

    Scheduled Task wakes computer up, BUT does NOT run?


    I found LOTS of Windows 8 waking & sleeping issues in this forum, but not this particular one:

    This is a backup task I've been using for several years with Windows 7 machines, but only recently started adding to Windows 8.1 boxes. The strange behavior is as follows:

    If the computer is on, the task will start at the scheduled time and do it's thing.
    If the computer is asleep (S3), it will wake up at the scheduled time, but the task never runs??!!

    I have attached the XML export of the task in case anyone's interested.

    Any ideas?
    Scheduled Task wakes computer up, BUT does NOT run? Attached Files

      My System SpecsSystem Spec

  2. #2


    Posts : 2,130
    Windows 8.0 x64


    I don't know the cause of the error. But I wonder if a quickie work-around might be to launch an Autohotkey program to move the mouse and click it a couple of times, wait a few seconds, then launch the task? Kludge but it might be easier than fixing Windows.

    That is, assuming it works.
      My System SpecsSystem Spec

  3. #3


    Posts : 2
    Windows 8.1

    Solved (I think!!)


    I may have an answer to my own problem: I initially thought this was an intermittent issue because during testing it did work once in a while. The backup job ran successfully last night at 10:00pm. On reviewing the event logs, I noticed the machine actually woke up about 30 seconds before the job was scheduled to run (9:59:30). It's possible that some of the tests I did yesterday before reporting the problem were not giving the system enough time to schedule the wakeup 30 seconds in advance of running the job (i.e. setting the job to run in 2 minutes, then saving everything, then putting the machine to sleep manually and not getting all that done soon enough to allow the system to schedule the wakeup 30 seconds before it needed to run the job). That may be why the problem appeared to be intermittent: sometimes I gave it just enough time to schedule the wakeup & sometimes I didn't !!

    I just did another test where I set everything up to run 5 minutes AFTER putting the system to sleep and everything worked fine, so I'm going to mark this problem as solved for now.

    Thanx for the reply...
      My System SpecsSystem Spec

  4. #4


    Posts : 2,130
    Windows 8.0 x64


    Often things are timing issues. I hope it stays fixed for you. Thanks for posting the details.
      My System SpecsSystem Spec

Scheduled Task wakes computer up, BUT does NOT run?
Related Threads
Solved Scheduled task didn't run in General Support
I should have had an automatic system restore backup today (It's been 7 days since the last system backup). It didn't happen, so I checked the Task Scheduler, and I see that System Restore task last ran yesterday morning at 8:46. Why didn't it run this morning? 25635 25636
Hi, Almost every morning for the last month or so I will discover my computer is running (monitor off, but computer not in sleep mode as it should be). To figure out what was waking it, I went to cmd prompt and used the command "powercfg -waketimers": I also tried "powercfg -lastwake":
How to Boot Windows 8 Directly to Desktop using a Scheduled Task Personally I like the new Start Screen. For me it is more logical to use allowing more customization options than the Start Menu on previous Windows versions. I like to see the Mail app live tile telling me about unread mail...
Hello everyone, I am trying to trace down my computer waking up unexpectedly at random intervals. I am hoping that there is log that I can look into or turn on that will tell me what is waking or how often my computer is waking up. Thanks Steve
Having a problem with the Regular Maintenance waking the computer (Windows 8 on a Lenovo Q-190) to do its scheduled task as it's supposed to do. Here are the symptoms: 1. If I change the time for Scheduled Maintenance in the Action Center (Change Maintenance Settings), it WILL be reflected...
In Windows 8, I am creating a scheduled task: http://imageshack.us/a/img443/8553/eventsviewerediteventfi.th.png When confirm all dialog windows, the error message "unsupported request" is displayed. How come? Thanks Bye
Eight Forums Android App Eight Forums IOS App Follow us on Facebook