TaskManager disabled by administrator error fix First Method: Click Start -> Run -> gpedit.msc -> User Configuration -> Administrative Templates -> System -> Prevent access to registry editing tools -> Right Click Properties -> Set it to Not Configured. Second Method: Click Start -> Run. Type this command in Run box and press Ok. REG add HKCUSoftwareMicrosoftWindowsCurrentVersionPoliciesSystem /v DisableRegistryTools /t REG_DWORD /d 0 Then a prompt will come up with this question: Value DisableRegistryTools exists, overwrite (Y/N)? Type yes and hit Enter. After u did that also type this command in the run box and hit enter. REG add HKLMSoftwareMicrosoftWindowsCurrentVersionPoliciesSystem /v DisableRegistryTools /t REG_DWORD /d 0 Then it will also come up with the question: Value DisableRegistryTools exists, overwrite (Y/N)? Type yes and hit Enter. Third Method: STEP1. Disable as much as you can from y...