Windows 10: Task Scheduler failing after BST and DST changes

We have hit an bug in Task Scheduler that seems to have surfaced between March 2021 and October 2021, The trigger for the issue is Daylight saving changes for the UK I guess Europe and may be other parts of the world and also there is some affect from the US DST change. I am seeing this on Server 2016 and 2019 versions of Windows so would expect Windows 10 to similarly affected.SymptomsAfter BST either starts or stops and clocks change a number of scheduled task fail to run. This appears to be limited to those using a weekly or monthly schedule, daily and other triggers work ok.Observed stat

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Task Scheduler with error message The selected task »CreateChoiceProcessTask« no longer exists

Hi,

Thank you for posting your query on Microsoft Community. Let me assist you.

I suggest you to clear the task from Task Scheduler using the below steps and check if the issue still persists.

Steps:-

• Type Task Scheduler on Search bar.
• Click on Task Scheduler Library.
• Select the particular task and right click on it.
• Select End.

Hope this information is helpful. Please do let us know if you need further assistance, we’ll be glad to assist you.

 

Task Scheduler and Synchronizing Across Time Zones fails


I am in the Eastern Time Zone which observes DST. I have Tasks that must be scheduled according to time in another Time zone that does NOT observe DST. I thought that checking the “Synchronize Across Time Zones” option box would do the trick, but that hasn’t worked. The tasks continue to be triggered according to my local time affected by DST, rather than one hour later to account for the reduced time difference.

Strangely, when I check the “Synchronize Across Time Zones” option, the “Next Run Time” under the Task Scheduler panel shows the correctly adjusted time, yet the task is still triggered at the time shown under “Triggers”. That is “Synchronize across Time zones” has no effect. See attached screen grab.

For context, the tasks record streamed audio programs from Egypt which which does not observe DST. So it is 7 hours ahead of Eastern Time in winter, when No DST is in effect and only 6 hours ahead in the “summer”, ie. when DST is observed here. Until now, I changed the trigger times at every time change, but thought that “Synchronize across Time Zones” would apply the trigger time changes automatically, but clearly it doesn’t.
So:

1. Why doesn’t it work in the way I set it up when even the “Next Run Time”s show the correct times?
2. How is the “Synchronize across Time zones” option supposed to work since I clearly don’t understand enough to use it properly, and
3. If I am taking a wrong approach to my problem, what is a better way?

Thanks

gc

PS: I saw at Defining Triggers - Windows 7 Tutorial that "Synchronize Across Time Zones" means "Configures the task to run using Universal Time Coordinated (UTC) instead of local time". I set a test trigger using UTC, but the task did not run.

 

Unable to run Task Scheduler

Hello Varun,

Let's determine the cause of the issue. To get started, I'd like to get the following information:

• Is this your first time to encounter this issue? If so, did you make any changes to your computer's configuration prior to this?
• Are you getting any error messages?
• Can you also please confirm the current build of your Windows 10?
  
  (Type winver into the Cortana search box, then hit
  Enter.)

Meanwhile, I suggest that you try starting the Task Scheduler through command line. To do so, please follow these steps:

• Open Command Prompt (Admin).
• Type this net start task scheduler and hit Enter.

We're looking forward to your response.