It seems that Windows is incorrectly interpreting the service as a security threat. The AMDRSServ.exe acts like a keylogger, recording keyboard and mouse inputs and monitoring programs. As a result, Windows may see the service as malware and block its access, in your case to the Videos folder. Such problems have been reported for a long time. Click on 'Actions' and select 'Allow...'. Hopefully it will teach the OS not to see the service as malware.
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• Minisforum um790 Pro • 65" TV (HDMI) • Sony 5.1 audio (toslink)