How to Fix the 0x800705b4 Windows Update Error Without clear reasoning for your specific error, work through these fixes starting at the top to try the easier ...

Microsoft is trying to make it easier to address issues that arise while trying to install Windows updates, by offering a troubleshooting tool to walk users through steps to resolve those problems.

A deployment image servicing and management (DISM) scan is less likely to fix the 0x800705b4 error but it's easy to do and can cover a few potential problems, including Windows Update errors.