Fix: Worker Thread Returned With Non Default Workload Class

The WORKER_THREAD_RETURNED_WITH_NON_DEFAULT_WORKLOAD_CLASS BSOD comes with the following error code 0x000001D6, and it’s a developer error.

This isn’t a common error, but if you ever encounter it, today’s guide will show you how to fix it properly.

How can I fix Worker Thread Returned With Non Default Workload Class?

1. Update Windows and your drivers

1. Open the Start Menu and select Settings.
   
2. Go to Windows Update and click on Check for updates.
   
3. If any updates are available, Windows will automatically download them.
4. Once the updates are installed, check if the problem is gone.

It’s also important to update your drivers, and the best way to do that is to download the latest drivers from your manufacturer. We have a great guide on how to update drivers on Windows 11, so feel free to try it.

2. Use Safe Mode

1. Open the Start Menu and then click the Power button.
2. Press and hold the Shift key and then select Restart.
   
3. Once the PC restarts, go to Troubleshoot.
   
4. Select Advanced options and then Startup Settings. Click the restart button.
   
5. Once your PC restarts, press F5 to open Safe Mode with Networking.
   
6. In Safe Mode, check if the problem still appears.

If the issue doesn’t appear, it means that one of the installed applications or drivers is causing the issue.

3. Remove recently installed software or drivers

1. Press the Windows key + X and choose Installed apps.
   
2. Locate any recently installed updated or installed apps.
3. Click the three dots next to them and choose Uninstall.
   
4. Follow the steps on the screen to complete the process.

If the error is still there, remove any recently updated drivers by doing the following:

1. Press the Windows key + X and choose Device Manager.
   
2. Locate any recently updated device drivers. Right-click them and choose Uninstall device.
   
3. Check Remove driver software for this device, if available, and click on Uninstall.
4. Restart your PC.

After doing that, check if the problem is still there.

4. Perform a clean boot

1. Press Windows key + R and type msconfig.
   
2. Go to the Services tab. Check Hide all Microsoft services and click on Disable all.
   
3. Next, click Apply and OK but don’t restart your PC.
4. Press Ctrl + Shift + Esc to open Task Manager.
5. Now go to the Startup tab and disable all items.
   
6. After doing that, restart your PC.

Check if the problem appears, if not, you need to enable services and apps one by one or in groups until you find the cause of the problem.

5. Perform System Restore

1. Press the Windows key + R and type rstrui.
   
2. Select the desired restore point and click Next.
   
3. Follow the instructions on the screen to complete the process.

If nothing else works, you might have to check your hardware or factory reset Windows 11.

WORKER_THREAD_RETURNED_WITH_NON_DEFAULT_WORKLOAD_CLASS error might not be easy to fix, but we hope that our solutions managed to help you.

This is just one of many BSOD errors, and in the past, we wrote about WORKER_THREAD_TEST_CONDITION and Worker Invalid Error in our previous guides, so don’t miss them.

We also have a guide dedicated to Worker Thread Returned at Bad IRQL that might offer more solutions to you.