[SOLVED] (Win11 24H2 build 26100.2314) - Error code 0x800f0991 when installing every cumulative updates

[MaXeLL]

Hello,

i've upgraded three computers from Win11 23H2 to Win11 24H2, two supported and one with an unsupported CPU, and now everytime I try to update the OS with the latest cumulative updates I receive the error code 0x800f0991. The strange thing is my main computer (the fourth one) didn't faced the same issue.

I followed the posting instructions and I have uploaded two CBS.log files and the ComponentScanner.txt.

"sfc /scannow", "Dism /Online /Cleanup-Image /RestoreHealth" and the component scanner app gave no error, everything fine.

CBS (1) is after I tried the command above and the component scanner, while CBS (2) is after i tried updating the OS.

Thank you in advance for any help you could give me.

 

[Windows Update Bot]

Hi @MaXeLL,

Welcome to Sysnative Forums!

If you haven't already, please review the posting instructions here, and attach the requested log files. Without log files, our helpers will not be able to assist, and this will slow down fixing your machine.

If logs have been already been provided, our team of volunteers will analyse the provided log files to build a fix for your system. Please be aware that this may take several days from your initial post, due to the high volume of threads that we receive.


- Sysnative Windows Update Team

 

[MaXeLL]

And this is the CBS log after i tried the command

Dism.exe /online /Cleanup-Image /StartComponentCleanup

I get error code 0x800f081f.

 

[MaXeLL]

Ok, i'm marking this thread solved because i fixed the problem.

The issue was the same as this thread:

S

[SOLVED] Thread 'Windows 11 24H2 build 26100.2161 - system tries to install KB5044384, despite it shouldn't'

Oct 25, 2024

Hi there,

Recently, I tried to install Windows 11 24H2 build 26100.2033, but it seems something went wrong with my computer since then. Windows Update keeps showing me error 0x800f081f.

Afterwards, I performed an in-place upgrade to build 26100.2161. The system is currently running on build 26100.2161. I was hoping this would resolve the 0x800f081f error, but it didn’t help. Unfortunately, the system still attempts to install update KB5044384, which is already present. In other words, KB5044384 is literally the update for build 26100.2161.

I tried running sfc /scannow, as well as the...

• Snow_
• Replies: 7
• Forum: Windows Update

I searched for build .1742 files on computers with the issue and, in fact, were missing, instead in the main computer were present.

I cooked a new ISO with the latest cumulative update KB5048667 (OS Build 26100.2605) thanks to uupdump.net and i've done an in-place upgrade.

Then I verified if build .1742 were present and they did! Finally i've done updates and DISM checks, all went ok, no errors at all.

With the january updates i'll make a new report to confirm if I have definitively resolved the issue.

 

[MaXeLL]

With the january updates i'll make a new report to confirm if I have definitively resolved the issue.

Bumping this thread just to report that the January Windows updates worked as expected, so the solution I found (simply doing an in-place upgrade after creating a new Windows 11 rom on uupdump.net) was the correct one.

Maybe this could help anyone who has this issue.