Error Message: "Task Manager has been disabled by your administrator"
When you try to open Task Manager, the following error may occur:
Task Manager has been disabled by your administrator
Resolution
This error is caused if the DisableTaskMgr restriction is enabled. To enable Task Manager, try one of these methods:
IMPORTANT: If this restriction was enabled in your system without you doing anything or without your knowledge, then it's highly likely that a Virus has blocked the usage of Task Manager in your system by enabling the DisableTaskMgr policy via the registry. I strongly suggest that you perform a
thorough checkup of your system immediately. Steps listed in the Resolution section of this article helps you unblock the Task Manager, but that does not remove the Virus (if any) from your system.
Method 1
Click Start, Run and type this command exactly as given below: (better - Copy and paste)
Top of Form

REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f

Bottom of Form
Method 2
· Click Start, Run and type Regedit.exe
· Navigate to the following branch:
HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies\ System
· In the right-pane, delete the value named DisableTaskMgr
· Close Regedit.exe
Method 3: Using Group Policy Editor - for Windows XP Professional
· Click Start, Run, type gpedit.msc and click OK.
· Navigate to this branch:
User Configuration / Administrative Templates / System / Ctrl+Alt+Delete Options / Remove Task Manager
· Double-click the Remove Task Manager option.
· Set the policy to Not Configured.

Message: "The command prompt has been disabled by your administrator"
When you attempt to run CMD.exe or a batch file, you may receive the message "The command prompt has been disabled by your administrator". This is caused by restrictions placed in Registry.
DisableCMD value is set to 1 or via Group Policy. To enable Task Manager, try any of these methods:
Method 1: Using the console registry tool
Click Start, Run and type this command exactly as given below: (better - Copy and paste)
REG add HKCU\Software\Policies\Microsoft\Windows\System /v DisableCMD /t REG_DWORD /d 1 /f
Method 2: Edit the registry directly
Open Registry Editor (Regedit.exe) and navigate to:
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System]
In the right-pane, double-click DisableCMD and set it's data to 0
Method 3: Using Group Policy Editor in Windows XP Professional.
Click Start, Run, type gpedit.msc and click OK.
Navigate to User Configuration \ Administrative Templates \ System
Double-click the Prevent access to the command prompt
You can then disable or set the policy to Not Configured. Disabling or setting this policy to Not Configured should solve the problem.

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Vishnu vardhan Reddy Boda is Tech Blogger and Software Engineer.

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