Many Surface Pro X users have reported camera issues this week. The cameras don’t seem to work on Microsoft’s Arm-powered tablet and reinstalling drivers don’t seem to help. The Verge reports getting the error code “0xA00F4271<MediaCaptureFailedEvent> (0x80004005)” when they tried to use the camera app.
A possible cause is an expired security certificate in Windows. Some Surface Pro X owners found a temporary fix. You can change the system date to May 22 to get the camera working again. But this could cause authentication issues for other websites and services. Microsoft has not fixed the problem yet.