I've tried a handful of the the remedies provided by this site. And none of them have worked, I've been up all night trying to figure out how to update Windows.
It keeps failing, and keeps providing the error Some update files are missing or have problems. We'll try to download the update again later. Error code: (0x80070003), I'm trying to install 2020-12 Cumulative Update for Windows 10 Version 2004 for x64-based Systems (KB4592438).


If anyone knows how to fix this, please let me know quickly, and as soon as possible.

Thanks!
Cheers!