Which version of Edge and Windows do you use? I test with enabling policy AutoPlayAllowed, it works well with kiosk mode.
You can also try adding this flag --autoplay-policy=no-user-gesture-required
, it works on my side with auto playing video in Edge kiosk mode:
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --kiosk --no-first-run --edge-kiosk-type=fullscreen --autoplay-policy=no-user-gesture-required "file:///C:/test/test.htm?color=white&video=video1.mp4&textvalue=12"
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Regards,
Yu Zhou