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Q196731: Application That Requires Schedule Service Fails

Article: Q196731
Product(s): Microsoft Windows NT
Version(s): 4.0
Operating System(s): 
Keyword(s): 
Last Modified: 10-AUG-2001

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0 
- Microsoft Windows NT Workstation version 4.0 
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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.

SYMPTOMS
========

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.

CAUSE
=====

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.

RESOLUTION
==========

To resolve this problem, do one of the following:

- Use a different program that is compatible with the Internet Explorer 4.0
  Task Scheduler.

  -or-

- Remove Task Scheduler by using the Add/Remove Programs tool in Control Panel
  by selecting "Task Scheduler v1.0 (remove only)" from the Install/Uninstall
  tab and clicking Add/Remove.
  NOTE: The Add\Remove tool may not show the Task Scheduler v1.0 service.

MORE INFORMATION
================

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).

1. Start Registry Editor.

2. Change the registry entries for Internet Explorer 4.0 Task Scheduler
  service:

     Key Name:
     HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Schedule

     Value Names:
     DependOnGroup: REG_MULTI_SZ
     DependOnService: REG_MULTI_SZ: RpcSs
     DisplayName: REG_SZ: Task Scheduler
     ErrorControl: REG_DWORD: 0x1
     Group: REG_SZ:
     ImagePath: REG_EXPAND_SZ: C:\WINNT\System32\MSTask.exe
     ObjectName: REG_SZ: LocalSystem
     Start: REG_DWORD: 0x3
     Type: REG_DWORD: 0x120

  to the following registry entries for Windows NT AT Schedule Service

     Key Name:
     HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Schedule

     Value Names:
     ErrorControl:REG_DWORD: 0x1
     ImagePath: REG_EXPAND_SZ: %SystemRoot%\System32\AtSvc.Exe
     ObjectName: REG_SZ: LocalSystem
     Start: REG_DWORD: 0x2
     Type: REG_DWORD: 0x10

Additional query words: winat schedule at scheduler that no longer functions task replaced

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Keywords          :  
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400
Version           : :4.0
Issue type        : kbprb

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