Windows 10 Update KB4338819 fails to install with error 0x800f0923

Hello. Have you tried to download it directly from the update catalog here > https://www.catalog.update.microsoft.com/Search...

You can also try to troubleshoot this issue here:


Fix windows update errors here: https://support.microsoft.com/en-us/help/10164/...

I recommend that you do a manual update for this KB. KB4340917 is the latest update and supersedes KB4338819. Hence, I would recommend that you install KB4340917 (A higher KB has lower KBs within itself)

Also an option is to jump to new feature update 1803. Let me know if you want to move to 1803 rather than doing this KB update.

1. Right click on Windows Start > Windows Powershell (Admin)
Type following (or copy and paste following) one by one and Enter

net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
Ren C:\Windows\System32\catroot2 Catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver

2. Type following in Windows Start Search box and hit Enter %systemroot%\Logs\CBS > Rename CBS.Log to something else.
If it doesn't allow you to rename - Type services in Windows Start Search box > Click Services > Scroll down to find the Windows Modules Installer service and double-click on it > Set its startup type to Manual > Reboot your computer
Go to C:\Windows\Logs\CBS > Rename CBS.Log > Reboot your computer > Then go back into the Services App and set Windows Modules Installer Service back to Automatic Startup (Note CBS log files contain information about windows update, SFC etc)

(Source - https://partnersupport.microsoft.com/en-us/par_...)

3. You can download the updates from Microsoft Catalog and update manually. Search for relevant KB in the Catalog.

Microsoft Catalog - https://www.catalog.update.microsoft.com/Home.aspx

Do let me know if you have any more question or require further help.

Thanks, but I am already using version 1803, build 17134.17

I'll try KB4340917 to see if that installs. Thanks.

My apoliges. I mistyped. The latest version is KB4340917 only which will bring you to 17134.191.

Thanks, I am currently downloading a newer update to see if that fixes the issue.

The update error troubleshooter only suggested re-installing all previous updates, which I'm pretty unwilling to do. That just seems like a recipe for more problems, as they never install right away anyway.

Thank you!

This worked, much to my surprise. 

It took 2 restarts for some reason, but now shows as up-to-date and shows OS build as 17134.191

I shall now be trying all update installs manually I think!

Thanks again,

B.