Windows Server Task Scheduler not running tasks
When trying to enable or disable a task, an error message saying “The selected task “{0}” no longer exists, To see the current tasks, click Refresh” is displayed. When clicking the Refresh, the Task Scheduler is empty but if closed and reopened, the tasks are visible again.
A similar scenario is described in this article.
This is how I solved it, which was much easier:
- Right click on a task and select Export. Save it to a file.
- Right click the same task and select Delete.
- In the right pane, select Import and select the previously saved file.
- Save the imported task and if necessary, enter Administrator password.
- Repeat for all tasks in the Task Scheduler.
After this all the tasks started working again.

