I am trying to schedule some powershell scripts for system maintenance\automation.  I am running the scripts under a dedicated domain user account.  When I run Get-WMI or Get-Service from a scheduled tasks I receive an "access denied" in $ERROR.  When the same commands are run locally (same account) they succeed.  Some examples are below:

In Task Scheduler:
   powershell -command &{Get-Service >> C:\testtask.txt}

This will return nothing due to an access denied.

In CMD:
   powershell -command &{Get-Service} >> C:\testcmd.txt}

This will return all services as expected.


Has anyone ever experienced this issue?  I also encounter it with Get-WMIObject.  As mentioned, this is local only so WinRM shouldn't be involved?  Regardless, WinRM is configured through GP and works great.  The issue only occurs from scheduled tasks.

I replicated the issue on Win7 SP1 x64 and Server 2008 R2 SP1.

Any help is greatly appreciated.

Thanks

Have you tried checking the "run with highest" box?

Thanks for the reply.  Yes, I have enabled the "run with highest privileges" checkbox in the TaskScheduler.  I have also tried running the command with the -EnableAllPrivileges switch.  While reseraching I found similiar issues that required an "-Authentication 6" for PacketPrivacy, but this only applies to remote connections.  This is local only.