To resolve this issue of task manager not working, please try the following steps:
STEP 1: Click Start and then on Run option. Now, type the command given below:“REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0 /f” to enable Regedit
STEP 1: Click Start and then on Run option. Now, type the command given below:“REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0 /f” to enable Regedit
STEP 2: Click Start, Run and type the command:“REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f” to enable the task manager disabled fix.
And click ok button
Restart your PC after carrying out the above steps. After following them, its simple to enable task manager. These steps are sufficient to cure any kind of task manager disabled problem. Windows XP task manager disabled is a serious concern when an operation cant be killed due to its operation. Such an operation causes the PC to crash, resulting in loss of any unsaved work.


