Windows 2003 Power Cfg Permission

From: Mike Streeter (street02_at_patrickind.com)
Date: 10/25/04 

Date: Mon, 25 Oct 2004 14:56:33 -0500

I have a machine with Windows 2003 Standard that won't let me change the
power options in the Power Options Properties dialog (powercfg.cpl). After
making the changes and clicking Apply, I get a "Not all privileges
referenced are assigned to the caller" error.

If I try the powercfg command line tool, it also fails as shown below:
C:\WINDOWS\system32>powercfg /CHANGE "Always On" /monitor-timeout-ac 0
An unexpected error condition has occurred. Unable to perform operation.
You may not have permission to perform this operation.

I haven't been able to figure out what I don't have permission to. I have
tried it both as "Administrator" and a user in the Administrators group. As
far as I can tell from regmon and regedit, there are no problems updating
registry keys. Branches I have worked with are
"HKLM\Software\Microsoft\Windows\CurrentVersion\Controls Folder\PowerCfg"
and "HKCU\Control Panel\PowerCfg"

Regedit shows that my change from the Power Options Properties stays in
"HKCU\Control Panel\PowerCfg\PowerPolicies\3\Policies" despite the error,
but the change does not take effect, and the next time I open the Power
Options Properties, the key changes back.

Thank you for any help or ideas.

-Mike