Windows 10: Windows update KB4566782 error message 0x80073701

Hello,

The above referenced update has failed to install multiple times 20+ and seems to be caught in an endless loop. Always the same error message. It renders my computer useless while it attempts the download & installation. Any ideas to resolve this? Please note I'm not a real tech savvy person. Thanks.

:)

 

Windows update error 0x80073701 and .Net Framework broken

When you do what?

Repair install or Windows Update?

If it's Windows Update, run the script that @Caledon Ken suggested in post #12

Windows update error 0x80073701 and .Net Framework broken

 

Windows Update Error Message 0x80070543


Ya Ya Ya, there's over a hundred threads like this, ...

Anyway, started getting this error message a few days ago, and done a lot of searching on this error message, apparently it's not, uncommon.

In particular, the (currently) 4 updates that are being affected are:

• Update for Windows 10 Version 1511 (KB3173428) - Error 0x80070543
• Security Update for Windows 10 Version 1511 (KB3172729) - Error 0x80070543
• Security Update for Adobe Flash Player for Windows 10 Version 1511 (KB3174060) - Error 0x80070543
• Cumulative Update for Windows 10 Version 1511 (KB3176493) - Error 0x80070543

The actions I've taken to date are:

1. Uninstalled firewall program (comodo)
2. Uninstalled anti-virus (Avast)
3. Reset the windows update catalog on local machine.

So the above errors are with the above done.

What other steps should I be taking to resolve the issue?

Below is notations for when I actually add to this thread.

1. Attempted to use the troubleshooter, no dice.

 

Updating Fails with Error 0x80073701

Hi, there appear to be errors in your log. What was the final statement on the screen?

Looks like the two key things are the error number 0x80073701
and ERROR_SXS_ASSEMBLY_MISSING

Have you also checked absolute basics:
- check your disk (e.g. HDTune v2.55 free Health and Error Scan tabs
- if ok, run
chkdsk c: /scan
from an admin command or Powershell prompt

Post the summary results of those.

If ok please run this MS tool and post summary results:
How to Fix Your Windows 10 Update Errors With SetupDiag

Given your consistent error number see
3 Solutions to Fix Windows Update Error 0x80073701

https://www.thewindowsclub.com/windows-updates-failed-to-install-error-0x80073701

Note how this refers to part of your CBS.log

If all else fails, resort to an in-place upgrade repair install which keeps all progs and data and most settings. Tutorial available.