JSI Tip 3256. When you start the Task Scheduler, you receive 'The Service is not responding to the Control Function'?

If the Task Scheduler is stopped, when you start it you receive:

The Service is not responding to the Control Function
More Help is Available by Typing NET HELPMSG 2186.

This will happen if the 'Read-only' attribute is set on the %SystemRoot%\Schedlgu.txt file.

To fix the problem, turn off the 'Read-only' attribute on the %SystemRoot%\Schedlgu.txt file, by either right-clicking in Windows Explorer and pressing Properties, or opening a CMD prompt and typing attrib -r %SystemRoot%\Schedlgu.txt.