(Solved) Error Code 0x80072f8f When Activating Windows 7 Professional

Hello friend!How are you? Hope you are very well. Today I am tired to activating windows 7 32bit professional on a hp probook 4320s. When I am activating windows 7 with the product key then I got an error message “error code 0x80072f8f”. But everything is fine.After few munities later I found my mistake. It is a very simple mistake, my laptop date and time is not correct.After correct the date