Windows 10: My camera is in use by another app

I recently had to use the smart phone to join a Zoom call because my camera wouldn't work. I later tried to open the computer camera but got a message that the camera is being used by another app. How does one find out which app is using it and regain use of the camera?Error Code:0xA00F4288<AllCamerasAreReserved>

:)

 

Missing apps: Store, People, Photos, Games & Camera on upgrading to 10

Thanks for replying spunk. That's the 'alphabetical' list I was referring to, none of these apps are in that 'All apps' list. Any more suggestions?

 

download Windows camera app

Success in resetting Store; that produced a download of the Windows camera, despite seeing error message again, download proceeded. Screen shows MS app for Windows camera and indicates downloaded. (Camera now listed in app list.) But when Launch was selected,
no action after screen with camera icon. Eventually message appeared " something went wrong: here is message code if needed: 0x400F4271>MediaCaptureFailedEvent>0xC00D3704. We seem to be moving ahead a step at a time. Next suggestion?

 

Laptop Camera

Thanks for updating us on the results of the troubleshooting steps that you have completed. Since the built-in webcam is still not working correctly and the same error code 0xA00F4244 (0xC00DABED) is still appearing, we suggest that we check the camera privacy
settings to see if the camera access is turned on. Kindly follow the steps below to check the camera privacy settings:

• Press the Windows key + I to open the Settings app.
• Near the top of the Settings app window is the search box, kindly type the word "webcam" or "camera".
• From the list of results choose Camera privacy settings.
• Make sure that "Let apps use my camera" toggle is set to On.

We look forward to your response once you complete the steps.