My camera stopped working, including face unlock, after the recent windows update[Build 26100.4061].

A recent Windows update could be the cause of your camera and facial recognition issues. Start by checking for and installing any pending updates for Windows and your camera drivers. If that doesn't resolve it, try uninstalling and reinstalling the camera drivers, or using the Windows troubleshooter for camera issues. Clearing Windows Hello settings and TPM (if needed) may also help.
Here's a more detailed breakdown of troubleshooting steps:

1. Check for Updates:
Go to Settings > Windows Update > Check for updates and install any available updates.
Restart your computer after updates are installed.
2. Troubleshoot Camera Issues:
Go to Settings > System > Troubleshoot > Other troubleshooters.
Locate and run the Camera troubleshooter.
3. Update or Reinstall Camera Drivers:
Open Device Manager (search for it in the Start Menu).
Expand Cameras, right-click on your camera, and select Update driver.
If updating doesn't work, try Uninstall device and then restart your computer. Windows will try to reinstall the driver automatically.
4. Check Camera Privacy Settings:
Go to Settings > Privacy & security > Camera.
Ensure the camera is enabled for the apps you want to use it with.

5. Reset Windows Hello:
Go to Settings > Accounts > Sign-in options.
Under Face Recognition, click Remove.
Under PIN, click Remove, then Remove again to confirm.
You may need to re-add your face and PIN after this.
6. Clear Trusted Platform Module (TPM):
Caution: Clearing the TPM can lead to data loss. Back up your data before proceeding. See HP Support for instructions on backing up your files.
Search for and open TPM.msc.
Follow the instructions to clear the TPM.

-----------------------------------------

If this answers your question and solved your query please "Click on Yes" or "Click on Like" if you find my answer useful.