Hello Christine,
This response will be long because the subject is complex.
My camera logo does not have an X on it. When I open the camera app, I am first stuck to this part.
Then, after waiting for 2 minutes, it displays that screen:
From french : "Impossible to start your camera. If you are sure that the camera is correctly connected and installed, search for driver updates.
If you need it, the error code is : 0xA00F429F<WindowShowFailed> (0x80121505)."
If I press Ok, I get:
" We need your autorisation. To use this app, modify the permissions to allow this app to use your cam and your microphone."
However, they are already accepted in my cam permission:
If I press ok, nothing happens, I am stuck at this asking permission screen without being able to use the app.
In my camera parameters, I can check if the cam is working or not, and it is. (I hide my cam, that is why there are no forms. But it is able to display the colors)
I made no change, driver nor software, before this issue happened.
I do not have a Fn key with a cam logo on it. I do not have a physical switch to disable or enable my webcam.
Here is the model of my device.
I searched for expalnations and found a discussion about the same issue.
The link proposed a solution via the registry editor that I tried: https://windowsbulletin.com/fix-windows-10-cant-start-your-camera-0xa00f429f-error/
After that, I still have the issue. However, if I open the camera app after a turning on, I have no problem, I can use and record. However, when I close the camera app and reopen it, the issue is restarting. So I have repaired for only 1 use of the camera.
Sincerely,