Windows Modules Installer Worker Crash Blocking Updates After Upgrading to 24H2 and Stuck Build Version at 26100.1742

Did you ever figure this out Warren I am having the exact same issue. Everything you explained I am having happened.

I have had this problem ever since upgrading to 24H2. It has gotten progressively worse. Even Defender crashes...

I've done several fresh installs of Win11... unfortunately the Media Creation Tool won't let me get an older version.

Tried with new nvme.

Tried with with new ram.

Tried with Nvidia card and onboard video only.

There is clearly something that has come in an update the last 2-4 months that has significantly affected functionality.

MSI MEG Z790 ACE MAX (with TPM)

Core i9 14900K

Nvidia GeForce RTX 3080

Corsair DDR5 (2x48gb) and (2x32gb)

I only have a 50% success rate of running sfc /scannow. When it bombs out, I get these errors in the event log.

Faulting application name: TiWorker.exe, version: 10.0.26100.2890, time stamp: 0xbff67064

Faulting module name: ntdll.dll, version: 10.0.26100.2454, time stamp: 0x7cb6b6a8

Exception code: 0xc0000409

Fault offset: 0x00000000000354f2

Faulting process id: 0x21E8

Faulting application start time: 0x1DB79A31746AEA0

Faulting application path: C:\WINDOWS\winsxs\amd64\_microsoft-windows-servicingstack\_31bf3856ad364e35\_10.0.26100.2890\_none\_a4ff055977698901\TiWorker.exe

Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll

Report Id: 3eb0ab19-cb49-4818-afea-1b43d7a573f9

Faulting package full name: 

Faulting package-relative application ID:

 ```

Faulting application name: TiWorker.exe, version: 10.0.26100.2890, time stamp: 0xbff67064

Faulting module name: wcp.dll, version: 10.0.26100.2890, time stamp: 0x2446a512

Exception code: 0xc0000409

Fault offset: 0x000000000016394d

Faulting process id: 0x3D18

Faulting application start time: 0x1DB79A3225D5511

Faulting application path: C:\WINDOWS\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.26100.2890_none_a4ff055977698901\TiWorker.exe

Faulting module path: C:\WINDOWS\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.26100.2890_none_a4ff055977698901\wcp.dll

Report Id: 727cc0c3-8ba8-438c-a30d-7b3be04e7e0a

Faulting package full name: 

Faulting package-relative application ID: 

Defender crashes often...

Faulting application name: MsMpEng.exe, version: 4.18.24090.11, time stamp: 0xcc823329

Faulting module name: mpengine.dll, version: 1.1.24090.11, time stamp: 0xed36483a

Exception code: 0xc0000005

Fault offset: 0x00000000000a7ee6

Faulting process id: 0x1500

Faulting application start time: 0x1DB79ABDC45A528

Faulting application path: C:\ProgramData\Microsoft\Windows Defender\Platform\4.18.24090.11-0\MsMpEng.exe

Faulting module path: C:\ProgramData\Microsoft\Windows Defender\Definition Updates{973A690C-73CB-468E-96F8-121F384D4201}\mpengine.dll

Report Id: 4e3cafef-c1d5-4258-b3a0-39767d755f0e

Faulting package full name: 

Faulting package-relative application ID: 

Hi, Biscotti Hublot.

Thank you for posting in the Microsoft Community.

From the error message you provided, it seems that Windows Modules Installer Worker crashed and it is related to the cbscore.dll module. You have tried some steps, but these did not solve your problem. I understand your confusion about this problem.

This kind of crash is usually a sign of a problem with Windows Update or component services.

First of all, it is commendable that you tried to solve the problem by yourself through the solutions you mentioned.

Maybe other users can troubleshoot according to the solutions you tried when they encounter similar problems. Let me express my gratitude to you.

This may be related to corrupted operating system files or invalid Windows Update components.

Here are some further troubleshooting steps you can try:

Repair Windows Update components

Although you have tried to clean the update cache, you can try to use some more specific commands to repair Windows Update components:

Manually reset Windows Update components:

Press Win + X and select Command Prompt (Admin) or Windows PowerShell (Admin).

Run the following commands in order to stop the update service and related processes:

net stop wuauserv 

net stop bits 

net stop cryptsvc 

net stop msiserver 

Delete Windows Update cache files:

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old 

ren C:\Windows\System32\catroot2 catroot2.old 

Restart all services:

net start wuauserv 

net start bits 

net start cryptsvc 

net start msiserver 

Try to update again.

If none of the above steps resolve the issue, consider doing an in-place upgrade, which is reinstalling Windows using the same version of the installation media, which preserves your files and most settings.

If the issue persists and you are unable to apply updates, a complete reinstall may be the ultimate solution.

Download Windows 11

Disclaimer: Before you work on your Windows system, back up your data.

We look forward to hearing from you!

Best Regards.

Capoo - MSFT | Microsoft Community Support Specialist

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