Cause of 0x800705b4 Error
The 0x800705b4 Windows update error typically appears when you attempt a Windows update, or when the update scheduler activates at its allotted time. There are several causes for it, namely problems with the service, and Windows Defender getting in the way. Narrowing down the root of an 0x800705b4 error involves trying various fixes.
How to Fix the 0x800705b4 Windows Update Error
There are a few things you can try to get Windows 10 updating correctly. Some are more hands-on than others, but none are too complicated. Start with the easiest and most likely to be successful and work your way through from there.
If you have Avast Antivirus, disable it temporarily (or permanently, if you choose). If you have AVG, it’s easy to disable the antivirus. If you use Malwarebytes, use its first-party guide to disable real-time protection. If you have Norton Antivirus, temporarily or permanently disable it. If you use McAfee, disabling the antivirus is easy.
If you use another antivirus client, check the official site to see if there’s a guide on how to do it. Alternatively, check the taskbar. You may be able to disable the client from there.
