You may run into problems casting Disney Plus to your TV because of firewall settings. To fix this, you’ll need to allow incoming connections for mirror to TV applications.When Disneyplus.com/begin won’t cast to TV, try the following steps:Go to your System Preferences.Choose “Security & Privacy”.Click on Firewall and select Firewall Options.Uncheck the box next to “Block all incoming connections”. This prevents your Mac from casting Disney Plus and other content to your TV.Check the box next to “Automatically allow signed software to receive incoming connections”. Hardware Acceleration If you’re trying to cast Disney Plus to TV from Chrome and it doesn’t work, check your browser’s hardware acceleration setting.With hardware acceleration on, Chrome will be able to use your computer’s GPU (graphics processing unit) to tackle processing-heavy tasks. Hardware acceleration is on by default on Google Chrome.