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An updated driver may have caused the issue, it's probably not compatible with your windows10.
Try Rollback webcam driver.
- Press the Windows Key and type device manager in the search bar.
- Open webcam properties in Device manager, and switch to Driver Tab.
- Click on Rollback driver, and select yes.
When Rollback is complete restart your computer and try opening the camera again.
If the rollback option is not available you can try Removing it & add the webcam again