This seems to have worked for me:
- Right-click on Windows key and select Command Prompt (Admin).
- Type the following commands in Command Prompt window. To execute them, press Enter after each one.
SC config wuauserv start= auto
SC config bits start= auto
SC config cryptsvc start= auto
SC config trustedinstaller start= auto
Finally, restart your PC and try to install the update that was previously returning the 0x80070bc2 error.