Windows 10: Updates KB4592438 & KB4586781 Fail At 100% install

Cumulative update KB4592438 and Security update KB4586781 keep failing at 100% install. When researching I saw that these updates are for OS Build 19041.630, but my OS Build is 19041.508. Could this be why these updates are failing to install?

:)

 

Windows Updates failed to instal

I just did step one and they have just all installed.... thank you so much.... it was quite frustrating having that update window pop up every 5 minutes and failing to instal every time

Thanks mate

 

KB4586781 succesfully installed

Windows 10Home v20H2 64 bit.In the "view latest updates" section it says that update KB4586781 was
succesfully installed on November 12th.Every day since it lists the same update number as UNsuccesfully
installed with an error code Oxc1900401,including today (Sat Nov 28th).Why is it attempting to install it again?

 

KB4025339 Fails Install 0x80070564

Thanks
I am trying Eagle 51's suggestions now. Windows Update troubleshooter found a bunch of errors and fixed all but one.The update is trying to download KB4025339 again. I'll see what happens. At step one troubleshooter finishes with one error unresolved "Potential Windows Update Database Error Detected-Not Fixed". Windows update stalled at 0%.

At step 2 same troubleshooter error. The KB finished a new download failed to install.
Did step 3 KB has downloaded but fails to install.

If Eagle's suggestion doesn't work I'll try EdTittel's suggestion

Tried bothe Eagle & Ed 's suggestions - do not work. Anyone else?

I have noticed that the latest update for my nvidia drivers has failed to update. Wondering about that!