Microsoft has confirmed that there is a bug in the windows security security application, or that the PC can't complete the installation of Windows version 2004.
According to Microsoft, this compatibility problem can not be eliminated without modifying Windows Security memory integrity settings in the software. If you don't want to give up memory integrity, try getting a new version of the display driver from the manufacturer to remove Windows 10. Upgrade screen for 2004.
If you need to temporarily shut down Windows Security memory integrity check, you can refer to the following:Go to windows 10 settings; Move to update and security;Transfer to windows security;Click on device security; Select core isolation details;
Switch memory integrity settings;
Restart the computer.
You can then manually check for windows 10 2004 updates in windows update, or get them with the update assistant.
If you still cannot see the update, make sure the device has updated the GPU display driver of Intel / NV, or the Bluetooth device driver of the relevant manufacturer. Microsoft has previously warned that choosing to ignore security issues and manually force windows 10 2004 updates using the media creation assistant (or other programs) could lead to a series of unintended consequences.