SMS: RCHELP Service Not Removed If Video Acceleration Is Disabled (184208)
The information in this article applies to:
- Microsoft Systems Management Server 1.2 SP3
This article was previously published under Q184208
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 about how to do this, view the "Restoring
the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key"
Help topic in Regedt32.exe.
SYMPTOMS
When you install Microsoft Systems Management Server version 1.2 Service
Pack 3 (SP3), a new Remote Control Video Helper service, Rchelp.sys, is
installed. This service assists with the Remote Control acceleration driver
and is normally installed by default for all clients that are running
Microsoft Windows NT regardless of whether their driver is actually
accelerated.
If the "Install Accelerated Screen Transfer on Windows NT Clients" option
is not selected in Client Properties, Client Configuration Manager marks
the Rchelp.sys file for deletion when the client restarts. The file is
removed from the client, but the service entries in the client's registry
are not removed and remain configured to start.
When the Windows NT client restarts, the following message is displayed:
At least one service or driver failed during system startup.
Use Event Viewer to examine the event log for details.
An Event 7026 is recorded in the client's Windows NT Event Viewer system
log.
CAUSE
This occurs because the Client Configuration Manager service does not
remove the RCHELP service from the client's registry, even though the file
is removed. Running Upgrade.bat does not correct the problem.
WORKAROUND
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.
To work around this problem, leave the remote control video acceleration
enabled, or manually change the registry key on the Windows NT client.
- Start Registry Editor (Regedt32.exe).
- Find the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\rchelp
- Change the Start value to 4. This disables the service, which prevents
it from loading during startup.
- Quit Registry Editor.
STATUS
Microsoft has confirmed this to be a problem in Microsoft Systems
Management Server version 1.2 Service Pack 3.
A supported fix is now available, but has not been fully regression-
tested and should be applied only to systems experiencing this specific
problem. Unless you are severely impacted by this specific problem,
Microsoft recommends that you wait for the next Service Pack that contains
this fix. Contact Microsoft Technical Support for more information.
Modification Type: | Minor | Last Reviewed: | 9/23/2005 |
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Keywords: | kbHotfixServer kbQFE kbbug kbpending KB184208 |
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