Windows 10 Hotfix Repository

What is happening is that W10MUI or W10UI handles updates separately; specifically, KB5043080 is installed from the directory where it was extracted, pointing to update.mum.
Then, the most recent LCU—KB5129195—is installed, also pointing to update.mum.
To ensure integration without corrupting the component store, both MSU files must be located together in the same directory:
KB5043080 – Checkpoint LCU
KB5129195 – Latest LCU
You must point DISM to the latest LCU (KB5129195).
DISM will process both updates as requested; it handles the delta differently, expanding and processing only the files necessary to integrate the update into WinPE and WinPE-Setup.
You can go to the image mount location and verify this yourself at C:\mount\boot\Windows\Temp.

 

It will keep failing because W10UI (or W10MUI) points to update.mum.
You need to point directly to the MSU file.
To be honest, I’m not sure if W10UI or W10MUI has an option to integrate updates directly from the MSU, but that is what you need to do.
Of course, this only happens when the build is newer than 26100.1 and 26100.1742.
Since you are using build 26200.9445, you will have to point directly to the MSU rather than update.mum to avoid the error.

 

Are you sure you changed LCUmsuExpand in W10UI.ini?

 

Sorry, my mistake.
I changed LCUmsuExpand=3 directly in W10UI.cmd and didn't realize that W10UI.ini takes priority over the settings in the CMD file.

I apologize for the confusion. I will repeat the test with LCUmsuExpand=3 correctly set in W10UI.ini and report the result.

Thanks for pointing this out.

UPDATE

Tested again with LCUmsuExpand=3 actually applied.

Confirmed working. The full W10MUI/W10UI run completed successfully, including install.wim, WinRE, boot.wim indexes 1 and 2, and final ISO creation.

The previous 0x80073712 / 14098 and 0x800f0991 errors are gone.

You were right — my previous test was still using LCUmsuExpand=0 from W10UI.ini.

Thanks for pointing that out!

 

Sory for interrupt this is the script I use and all went ok did I do the right way 26100/2/3-IOT LTSC and 28000, 17763 resetbase is set to 0 and is it that way to set setting for now?
[W10UI-Configuration]
Target =
Repo =
DismRoot =dism.exe

Net35 =1
Net35Source =
Cleanup =1
ResetBase =1
LCUwinre =1
WinRE =1
LCUmsuExpand =1
UpdtBootFiles =1
SkipEdge =0
SkipWebView =0
UseWimlib =1
WimCreateTime =0
LtscAddEP =1

_CabDir =W10UItemp
MountDir =W10UImount
WinreMount =W10UImountre

wim2esd =0
wim2swm =0
ISO =1
ISODir =
Delete_Source =0

AutoStart =0

AddDrivers =0
Drv_Source =\Drivers

 

It is not needed to change LCUmsuExpand default state

LCUmsuExpand=3 is only required if source image/iso is 26x00.9445 or later update (24H2/25H2/26H2)

 

so the setting I show is good to use and no ned to change and good to go with for now?

 

Yes

 

Downloaded and extracted the compressed file (wimlib-1.14.5-windows-x86_64-bin.zip) in a folder named "wimlib".
This folder is within a folder named "W10UI", where the .cmd and .ini files are located.
Set "UseWimlib=1
The script doesn't detect wimlib to be used. What am I doing wrong?
I expect the script to inform me that it detected wimlib just like it does with dism. Correct?

Thanks.

 

Wimlib needs to be next to W10UI,cmd not in a separate folder, afaik.

 

I tried moving all files not just the exe and dlls next to W10UI.cmd, same thing. The script doesn't detect it. I expect the script to say anything about detection, dunno.

 

Show the progress here in code tags.

Like this:

Code:

====================== W10UI v10.63f =======================
[1] Target (x64): "G:\W10UI\W10UI_19045\19045_Work_x64_NL"

[2] Updates: "G:\W10UI\W10UI_19045\19045_Updates_x64_NL"

[3] DISM: "Host OS"

[4] Enable .NET 3.5: YES

[5] Cleanup System Image: YES      [6] Reset Image Base: YES / Extra

[7] Update WinRE.wim: YES

[M] Mount Directory: "c:\W10UImount_23070"

[E] Extraction Directory: "c:\W10UItemp_31281"

============================================================
Change a menu option, press 0 to start the process, or 9 to exit:

Code:

============================================================
Running W10UI v10.63f
============================================================

============================================================
Configured Options...
============================================================

Net35
Net35Source
Cleanup
ResetBase
UseWimlib
WimCreateTime
WinRE
ISO

============================================================
Extracting files from .msu files...
============================================================

1/1: windows10.0-kb5129236-x64_LCU_7727.1.0.msu

============================================================
Extracting files from update containers (cab/wim)...
*** This will require some disk space, please be patient ***
============================================================

1/12: defender-dism-x64_steven4554_Sept_08_2026.cab
2/12: windows10.0-kb5007401-x64_Critical_DU_for_NET35.cab
3/12: windows10.0-kb5011048-x64_NDP481_Base_9166.1.cab [NetFx]
4/12: windows10.0-kb5011064-x64_NL_NDP481_NL_LP_10.0.1.8028.cab [NetFx]
5/12: windows10.0-kb5015684-x64_22H2_EP_1799.1.2.cab [Enablement]
6/12: Windows10.0-KB5019180-x64_PSFX_MMIO_2673.1.1.cab [Microcode]
7/12: Windows10.0-KB5020683-x64_PSFX_OOBE_2304.1.3.cab [OOBE]
8/12: windows10.0-kb5122887-x64_DU_SafeOS_7722.1.16.cab [SafeOS DU]
9/12: windows10.0-kb5126029-x64_DU_Sources_7720.cab [Setup DU]
10/12: Windows10.0-KB5126256-x64_PSFX_ESU_7664.1.1.cab
11/12: Windows10.0-KB5126421-x64-NDP481_CU_9346.1.cab [NetFx]
12/12: Windows10.0-KB5129236-x64.cab [Combined]

.................................

============================================================
Modifying install.wim image creation time ...
============================================================

running...

Modifying wim creation time can only be performed by wimlib-imagex..

 

Oh, I understand, though I expected something like this just to make sure wimlib is actually used to process the files BEFORE the operation started:

Code:

====================== W10UI v10.63f =======================
[1] Target (x64): "G:\W10UI\W10UI_19045\19045_Work_x64_NL"

[2] Updates: "G:\W10UI\W10UI_19045\19045_Updates_x64_NL"

[3] Servicing utility: wimlib

[4] Enable .NET 3.5: YES

[5] Cleanup System Image: YES      [6] Reset Image Base: YES / Extra

[7] Update WinRE.wim: YES

[M] Mount Directory: "c:\W10UImount_23070"

[E] Extraction Directory: "c:\W10UItemp_31281"

Is it correct to put next to the script these files only?:
libwim-15.dll
wimlib-imagex.exe

 

Yep, that's how it works

 

you don't have to place it next to the script
my wimlib is in this folder: W10UI_10.63f\bin\bin64

32-bit wimlib could be in the W10UI_10.63f\bin folder instead

the idea is to have 32-bit stuff in the bin folder (cdimage.exe, PSFExtractor.exe), and 64-bit stuff in the bin\bin64 folder (the same way uup-converter works)

 

What i must do to install kb5129236 ??

 

hahahaha, we need more emojis on this forum thank only "thanks"

 

How do you set that custom path, or does the script look into that specific folder by default?
I mean, it's not mentioned in the readme file.

Thanks.

 

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Yes I got it. I'm just asking @Paul Mercer out of curiosity. Cheers