Windows 10: Windows update KB4494441 failed with error 0x80070026

Hello,


Windows update cannot install the update KB4494441 because of error 0x80070026.

So, I ran successfully

dism /Online /Cleanup-Image /CheckHealth
dism /Online /Cleanup-Image /ScanHealth


But the following command:

dism /Online /Cleanup-Image /RestoreHealth

failed with the error 0x800f081f. I am asked to provide a valid source for system files, but I don't have them. It is possible to download them?


Regards,

Tibo

:)

 

Windows Update KB31566421 will not install - Error 0x80070026

Before doing the Clean Boot I went back and performed the initial process, using the Windows File Explorer and Task Manager to verify the steps.

net stop wuauserv (successful)

net stop cryptSvc (successful)

net stop bits (successful)

net stop msiserver (already stopped)

Used the Windows File Explorer to rename directories.

SoftwareDistribution (renamed successfully)

catroot2 (had to stop cryptSvc again to rename this directly)

Started up the services above and rebooted. The update downloaded, but did not install. Still reporting the Error 0x80070026.

Followed the Clean Boot procedure and restarted. Once again the updated downloaded installed about 99% and the reported the Error 0x80070026.

Attempted to install the update from the saved downloaded version from the clean boot environment as I did earlier. Once again the update appeared to install, but then reported that the "Security Update for Windows (KB3156421)" was not installed.

Any other suggestions? I see that others are experiencing the same issue with this update.

Thanks...

 

Windows Update error 0x80070026

We appreciate your time and effort for getting back to us and I apologize for the delay in responding.

I’m sorry to know your issue is still unresolved.

The Windows Update 0x80070026 error may be caused by windows system files damage



Let us try the following methods and check if it helps.

Method 1: Perform System File Checker (SFC) scan.

SFC scan will scan for corrupt system files on the computer and repair them.

• Press Windows key + X, click Command Prompt (Admin).
• In the Command Prompt, type the following command, and then press ENTER:

sfc /scannow



If the issue persists then follow the below method.

Method 2: DISM Commands.

Fix Windows corruption errors by using the DISM.

I would suggest you to run DISM commands from Command Prompt (Admin).



Follow the below steps:

1. Press Windows + X keys and click Command Prompt (Admin).

2. Type the following commands in command prompt one by one and press Enter after each command.

Dism /Online /Cleanup-Image /CheckHealth

Dism /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-Image /RestoreHealth



I would suggest you to download and install the updates from the download center.

Hope the above information was helpful.



If you need further assistance, please do let us know and we would be happy to help you.

 

Windows Update KB31566421 will not install - Error 0x80070026

Hi,

Still no luck. Here's what I did:

1. Ran Windows update troubleshooter. It reported "Problems found" and "Windows Update components must be repaired" with "Fixed" and a green check mark.

2. Let the Windows update automatic process run. Once again the updated downloaded installed about 99% and reported "Cumulative Update for Windows 10 Version 1511 for x64-based Systems (KB3156421) - Error 0x80070026."

3. Re-ran Windows updated troubleshooter. Reported the same as step 1 above.

4. Ran Windows update standalone. Once again the update appeared to install, but then reported that the "Security Update for Windows (KB3156421)" was not installed.

5. Ran svc /scannow and it reported "Windows resource Protection did not find any integrity violations"

6. Re-ran Windows updated troubleshooter. Reported the same as step 1 above.

What do you suggest next? Thanks...