Windows 10: update 21h2 fails in error

I'm receiving error when updating to 21h2 0xc1900101

:)

 

Windows 10 update 21H2 fails at 96%

I'm trying to help a friend who can't install Windows Update 21H2. The update runs to 96% and then fails with a vague "windows can't update right now, we'll try again later" message. So far we've run Chkdsk /f (no errors found) and SFC / SCANNOW (errors were found and fixed). We've also disabled the antivirus and third party firewall, and changed the DNS server settings on the network adapter, but nothing has helped; the update continues to fail at 96%. Any suggestions as to what we could try next? I'm wondering if maybe we should just skip 21H2...? Any idea when the next update is coming?

 

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!

 

Windows Update KB5011487 fails to install Win10 21H2. Here we go again

Depending your available time and desire to learn, I would start with
Windows Update KB5011487 fails to install Win10 21H2. Here we go again

It may be best for you to started a new thread and post a link to it it this one, just so things don't get overly confusing trying to help two people in this thread ......... just my 2 cents worth *Smile