Hi, @Bazsl
Thanks for reaching out!
I understand the troubles you have encountered with screen mirroring from your desktop to the Roku device. I'm here to help.
Let's try the steps below!
Prerequisites:
- Ensure both devices are on the same Wi-Fi network.
- On your Roku TV: Go to Settings > System > Screen Mirroring.
- Set "Screen Mirroring Mode" to "Prompt" or "Always Allow".
How to screen mirror from a Windows 11 computer

Use the following steps to connect your Windows 11 computer to your Roku streaming device and start screen mirroring.
- On your computer keyboard, press Win + K to open Quick Settings
- Click Connect to a wireless display
- Select your Roku device from the list of wireless display devices to start the connection
- Follow the instructions on your Roku device to allow screen mirroring
If you have issues connecting to a wireless display on your Windows device, contact Microsoft support for help.
Hope this helps!
Thanks,
Roku Community Team.
Takashi O.
Roku Community Moderator