SBS 2008 error 311 and 101

please help me w/ this error and the associated error:

TaskScheduler 311 9/13/2011 9:00:00 PM 4
Event Details:    Task Scheduler failed to start Task Engine "" process due to an error occurring in "LUAIsElevatedToken" . Command="taskeng.exe" . Additional Data: Error Value: 2147943645.

TaskScheduler 101 9/13/2011 9:00:00 PM 4
Event Details:    Task Scheduler failed to start "\Microsoft\Windows\Backup\Microsoft-Windows-WindowsBackup" task for user "TCFM\TCFMSVR01$". Additional Data: Error Value: 2147943645.
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adamfhAsked:
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Hypercat (Deb)Commented:
It wouldn't be WSUS but Windows Update itself that is causing the problem.  If you've disabled WSUS but haven't changed the group policies so that you can run Windows Update manually, then it could be preventing you from installing any updates. Do you know anything about the group policies that are applied in Small Business Server installations? Are you sure that this hotfix download is using Windows Update (I haven't tried to download it anywhere myself)?
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Hypercat (Deb)Commented:
This looks like you have a backup task scheduled using Windows Backup and it doesn't have the required privileges to run.  What account are you using in the task scheduler to run the task? If you didn't put in a specific user logon and password, it would be using the logged on account to run the task, which might not have the appropriate permissions.
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adamfhAuthor Commented:
thank you hypercat.
Can you please walk me through this one?
I'm not a professional IT person, rather a physician who is managing my own network.

I opened the scheduled task "Microsoft\Windows\Backup\Microsoft-Windows-WindowsBackup" and changed the user to my domain admin account, setting it to run whether user is logged in or not, and to remember password.

What should I do now?  Wait for the report summary tomorrow and see if the error continues?
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Hypercat (Deb)Commented:
That should work; as long as the task is using the login information of your domain administrator account, it should have all the privileges and permissions it would need to run.  Let's see what happens with tonight's backup and let us know the results. If you are still having problems, please post the contents of the backup report and any error messages related to the backup that may appear in the event logs on the server.
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adamfhAuthor Commented:
I will post the report from tomorrow morning....
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adamfhAuthor Commented:
For some reason unknown to me, SBS reset the user from my domain admin account to the <domain name>/<server name> account. The error remains the same:

Event Details:    
Task Scheduler failed to start "\Microsoft\Windows\Backup\Microsoft-Windows-WindowsBackup" task for user "TCFM\TCFMSVR01$". Additional Data: Error Value: 2147943645
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Hypercat (Deb)Commented:
Take a look at this Microsoft support article:

http://support.microsoft.com/default.aspx?scid=kb;en-us;950363

The key here is to check your task settings to see if the "Stop if computer ceases to be idle" option is selected.  If so, you should download and install the hotfix to see if it will solve your problem.
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adamfhAuthor Commented:
thank you, I'm going to try that this weekend....will get back to you.
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adamfhAuthor Commented:
little problem, I tried to run the hotfix. It could not, indicating that the required service was disabled or not installed. I presume this is referring to the WSUS? I have this service removed b/c it was causing problems on the service.
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