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IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information on how to do this, view the "Restoring the Registry" online Help topic in Regedit.exe or the "Restoring a Registry Key" online Help topic in Regedt32.exe.
Programs that require the use of the Schedule service (Atsvc.exe) provided with Windows NT may fail when you run them on a Windows NT system for which you have also installed Task Scheduler (a Microsoft Internet Explorer 4.0 optional component). You will see inconsistent results when attempting to start a program using the AT commands. An example of such a program is Soon.exe from the Windows NT Resource Kit.
When you install Task Scheduler on Windows NT, it replaces the Schedule service. The Schedule service no longer shows up in the Services utility in Control Panel.
To resolve this problem, do one of the following:
If the Microsoft Task Scheduler is not automatically removed, the services portion of the registry can be manually modified as indicated below.
WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.
For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).