How to fix ntdll.dll error in window 11

Question

[Windows Error Reporting]

Time Type Details

9/16/2025 3:10 PM Application Error Faulting application name: WizardLauncher.exe, version: 0.0.0.0, time stamp: 0x6890c7e8 Faulting module name: ntdll.dll, version: 10.0.26100.5074, time stamp: 0x16785569 Exception code: 0xc000041d Fault offset: 0x000b435c Faulting process id: 0x444C Faulting application start time: 0x1DC271BCD7A289E Faulting application path: C:\Wizard101\PatchClient\BankB\WizardLauncher.exe Faulting module path: C:\Windows\SYSTEM32\ntdll.dll Report Id: 7ba5ba78-9fab-424b-9656-c1ec40dbcc74&#x000d

Answer 1

Hi ,

Try creating a local account and installing the game. Try opening the game in that local account.

https://support.microsoft.com/en-us/windows/manage-user-accounts-in-windows-104dc19f-6430-4b49-6a2b-e4dbd1dcdf32

Select If you select the option I don't have this person's sign-in information, you can sign up for a new email address and create a new Microsoft account. If you want to create a local account, select the option Add a user without a Microsoft account

Thanks

Answer 2

Hi Jun Xin See Toh,

Thank you for reaching out to Microsoft Q&A about the crash you're experiencing with the Wizard101 launcher. I understand how frustrating it can be when things don’t work as expected—especially when you're excited to play. You're not alone in this, and I’m here to help you get back into the game.

The error you reported involves a system file called ntdll.dll, which is part of Windows itself. This kind of issue can happen due to corrupted files, compatibility conflicts, or background processes interfering with the game. Below are some other safe and effective steps you can try:

Step 1: Restart Your PC and Relaunch the Game

Sometimes, a simple restart clears temporary memory issues or background conflicts. If the Wizard101 launcher is frozen or not responding:

• Press Ctrl + Shift + Esc to open Task Manager.
• Find WizardLauncher.exe in the list.
• Right-click it and select End Task.
• Then restart your PC and try launching the game again.

Step 2: Run System File Checker (SFC)

This tool scans and repairs corrupted Windows system files.

• Press Windows + S, type Command Prompt.
• Right-click it and choose Run as administrator.
• Type the following command and press Enter:

    sfc /scannow
  

• Wait for the scan to complete. If it finds and fixes issues, restart your PC and try launching the game again.

Step 3: Run DISM (Deployment Image Servicing and Management)

If SFC doesn’t resolve the issue, DISM can repair deeper system image problems.

• Open Command Prompt as Administrator again.
• Type:

    DISM /Online /Cleanup-Image /RestoreHealth
  

• Let it finish (this may take a while). Then restart your PC.

Step 4: Check for Windows Updates

Outdated system files can cause compatibility issues.

• Go to Settings > Windows Update.
• Click Check for updates and install any available updates.
• Restart your PC after updating.

Step 5: Run Compatibility Troubleshooter

Wizard101 may not be fully optimized for your current Windows version.

• Right-click on WizardLauncher.exe (located in C:\Wizard101\PatchClient\BankB\).
• Select Properties > Compatibility tab.
• Click Run compatibility troubleshooter.
• Follow the prompts and test the recommended settings.
• Alternatively, manually set: -Compatibility mode to Windows 8 using the dropdown. -Under the Settings heading, find Run this program as an administrator.
  • Check the box for this option.
  • Click Apply, then OK to save your changes.
  • Try launching the game again.

Step 6: Reinstall Wizard101

If the launcher itself is corrupted, reinstalling ensures a clean setup.

• Go to Settings > Apps > Installed Apps.
• Find Wizard101 and uninstall it.
• Download the latest installer from the official Wizard101 website.
• Reinstall and try launching again.

*Disclaimer: Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites or any support related to technology. 

If you’ve tried these steps and the issue still persists, please reply to this thread with any error messages or screenshots you’re seeing. I’ll be happy to assist further.

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Answer 3

at the end of the days, I revert back to previous version of the window is the solution. idk what had happened on the latest version.

Answer 4

Hi ,

Have you tried starting the application as an administrator and see if you have space to perform the update?

Thanks