You can cast content from your computer to a Microsoft Teams Room (MTR) or a Surface Hub device. This includes screens, windows, and PowerPoint live. You can choose to Just cast or Cast and join meetings that are scheduled on your calendar. Additional attendees can be added through the desktop app or by using the MTR device console. Before you begin Ensure you have access to MTR on Windows ...
By "cast to TV", do you mean connecting the TV wirelessly using Miracast? To determine the issue, please press Windows+R and enter "mmsys.cpl" when the issue occurs, and provide a screenshot showing the playback devices.
On the PC you’re projecting from, select Windows logo key + K and select the PC you’d like to connect to. Or you can search for Cast in the Windows Search bar, then select Connect to a wireless display. On the Display settings page, under Multiple displays, select Connect to a wireless display, then select Connect.
For other Miracast® enabled devices, look for Miracast or Cast in Settings and follow your device's instructions. Use the Microsoft Wireless Display Adapter app To change the settings for your adapter, update the firmware, and more, you'll need the Microsoft Wireless Display Adapter app. Here's how to install it from the Microsoft Store:
The issue with the wireless cast feature on your upgraded Windows 11 PC appears to be related to firewall settings blocking necessary UDP traffic. Here are steps you can take to resolve the problem without relying on a broad UDP allow rule:
I understand your situation where your computer is unable to cast or mirror to your Roku TV and Fire Stick device after a Windows update, but the casting works fine on other devices. Based on your description, Windows Update may have installed new WiFi or display drivers that cause compatibility issues with the screen casting feature.