Symptoms of The Problem:
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Whenever you try to open the task manager using CTRL+ALT_DEL or right click on the startup bar and task manager button is disable of if enabled clicking it shows the following message,
"Task Manager has been disabled by your administrator".
Cause of The Problem:
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There may be several causes behind the problem.
1)The account your are using is blocked via the "Local Group Policy" or "Domain Group Policy".
2)Registry settings block to use "Task Manager".
3)The virus attack.
Solution of The Problem:
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Method 1: With Console Registry Tool
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Go to "Start" -> "Run" -> Write the following command,
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f
and press enter. Better you can copy the command and paste on to your run window.
Method 2: Edit Registry Settings
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1.Open notepad as an administrator.
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr"=dword:00000000
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\LocalUser\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr"=dword:00000000
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system\]
"DisableTaskMgr"=dword:00000000
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"DisableCAD"=dword:00000000
2. Copy the above contents and paste it into notepad.
3. Save the file as fix.reg
4.Double click on the file and reboot your computer.
Method 3:
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1. Go to "Start" -> "Run" -> Write "Gpedit.msc" and press enter.
2. Go to following branch
User Configuration / Administrative Templates / System / Ctrl+Alt+Delete Options / Remove Task Manager
3.Select Remove Task Manager and set the policy to Not Configured.
4.Close "Gpedit.msc" memory management console.
5.Go to "Start" -> "Run" -> Write "gpupdate /force" and press enter.
Method 4: With regedit.exe with explorer.
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1. Go to "Start" -> "Run" -> Write "regedit.exe" and press enter.
2. Go to following branch HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies\ System
3.In the right-pane, delete the value named DisableTaskMgr
4.Exit registry editor.
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