Network - Wireless & Wired Connections

Help & troubleshooting for network issues, including connecting your device to your home Wi-Fi network, connecting to public networks, troubleshooting wireless issues & ethernet connections, and optimizing streaming performance.
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Level 7

CASTING ISSUE TO NON ROKU TV

I just installed a ROKU Express.

When going to my Desktop PC, I used to be able to cast videos from that TV to a different Chromecast TVattached to it. Now I cannot cast to that other TV at all.
I get an error message that says: 'ROKU EXPRESS SOURCE NOT SUPPORTED".
 
Suggestions?
 

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