How to fix fix Windows Update error 800705b4.

Method 1. Try use the Windows Update Troubleshooter.
Method 2: Update a driver for hardware that isn't working properly.
Method 3: go to the Microsoft Answers website for more ideas
Method 4: Type net stop wuauserv then press enter
Wait for confirmation message
Type net start wuauserv then press enter
Wait for confirmation message
Done

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