How To Fix Error code 800B0100 / Installing Important Update Windows 7 Service Pack 1 failed

Installing Update Windows 7 Service Pack 1 (KB976932) Failed. Some updates were not installed. Code 800B0100 - Windows Update encountered an unknown error. Solution: The copy of Windows you are using is not genuine. So, optional update delivery is not working. You may be a victim of software counterfeiting. To use all Microsoft windows features, such as all updates from Windows Update; get the latest updates, your copy of microsoft windows must be validated as genuine.