Task manager

[darryl]

When I hit alt ctrl del it says the task manager has been
disabled by the administrator.

When I right click the task bar that option is greyed out

 

[Neil]

Check your local security or group policy. An options
might be set in there to disable the task manager for
certain user groups.

 

[Doug Knox MS-MVP]

Click Start, Run and enter REGEDIT Go to:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System

Look in the right pane for a value called DisableTaskMgr. If it exists, it
should be set to 0 (zero). If not, double click it and set it to 0. If it
doesn't exist, right click in a blank area of the right pane and select New,
DWord value. Name it DisableTaskMgr and leave it set at 0.