Xbox console companion not showing screen when streaming.

You need to stream your console to your laptop (Has to have Windows 10) with The Xbox Console Companion app. Start the Xbox One, then start the Console companion app, then select the connect icon on the left side of the app, and your console should show,
just select it, and select stream, that will then stream your console to your laptop.

On Xbox Console Companion app, you can 'test streaming'

This will show your streaming speed.

Lastly, you may try set your router setting..?

You can't use mouse and keyboard while streaming. When streaming you are using the xbox console that is just showing in your pc screen.

Same here.

Since a few days, Xbox App stream just show a black screen, whether I want to stream from cloud, my XSX, or XO.

Old "Companion" app still streams perfectly for XO. Cloud works perfectly from browsers on the PC. It's clearly the Xbox App that's at fault here.

im also having this problem it has to be on xboxs side a recent update must of broke the app because i been using this app for 3 months its been perfectly fine till this week