mmhmm for Windows has minimum requirements for hardware and software. If you’re getting this error message, you’re likely running a system that is not supported because it’s running older hardware, older supporting libraries, or is using device drivers that need to be updated. (We have seen this issue with older cameras, GPUs, and onboard graphics.)
To resolve this, try these steps:
1. Check your camera permissions
Type “camera settings” in the search field and click to open the Camera privacy settings page.
Verify that the “Camera access for this device is on” and the slider for “Allow apps to access your camera” is on.
Scroll down to the section “Allow desktop apps to access your camera” and ensure that the slider is on.
2. Update your device drivers
See this Microsoft support article for details.