Use this Fix tool released by Microsoft to solve Windows update issues in Windows 10, 8 and Windows 7. This fix tool will help you to fix issues related to these error codes shown below.

Windows Update Error Codes: 0x80073712, 0x800705B4, 0x80004005, 0x8024402F, 0x80070002, 0x80070643, 0x80070003, 0x8024200B, 0x80070422, 0x80070020

Download this tool, save it to a folder, then execute (double click) the cab file to start troubleshooting.

Windows Update Troubleshooting Guides and Tools