Windows 10: Error 0x80092004 on latest update (KB4100403)

Argh! I normally consider myself pretty competent when it comes to troubleshooting Windows or other issues. But I'm at wits' end here.

I am repeatedly receiving an 0x80092004 error whenever I attempt to install the latest update, KB4100403, on Windows 10 Pro x64 Build 1803. (Part of the problem, frankly, may be that this is a 10 year old laptop that came with Vista installed years ago.) I've tried all of the following troubleshooting steps:
1. Ran Windows Update Troubleshooter multiple times
2. Ran DISM /cleanupimage and SFC /scannow (no errors reported)
3. Downloaded and tried to install KB4100403 x64 manually from the Microsoft site's repository
4. Manually stopped and restarted all services (BITS, WUAUSERV, etc.)
5. Ran the "reset Windows Update" batch file available here on TENforums
6. Tried all of the above steps again in Safe Mode
7. Tried WUMT
8. Deleted SoftwareDistribution folder and tried several of the above again

The only thing I can think of to try that I haven't yet, is a Repair Install or something of that nature. Any other ideas?

Thanks in advance.

:)

 

I cant update through windows update . error 0x80092004

• 2018-04 Cumulative Update for Windows 10 Version 1709 for x64-based Systems (KB4093112) - Error 0x80092004

 

Security Update KB4093112 failing with error 0x80092004

Hi

I started with 3 updates failing to install.

Cumulative update Feb 2018 KB4074588. Looking at the article it said it was for a different OSbuild to my 16299.192. My build should use KB4056892.

Following this through I found, "Microsoft recommends that users uninstall the Windows 10 version 1709 January KB4056892 Delta Update package and install the March 2018 full latest cumulative update,

KB4088776."

When I went to the Update catalog I found that this had been superseded by KB4089848 and KB4093112.

I went to the first one and found that that had been superseded by the second.

I uninstalled the January update and rebooted.

I manually downloaded and installed KB4093112 which failed with error 0x80092004

My update history shows that the following updates have failed to install:

I've tried the Updates troubleshooter and that failed to solve the problem.

PS About My PC shows that it is

Windows 10 Pro

version 1709

OS Build 16299.15

When I look up KB4093112

https://support.microsoft.com/en-gb/help/4093112/windows-10-update-kb4093112

It says that this KB is for OS Build 16299.371

Different KB items are listed for different builds, but 16299.15 is not amongst them.