tvapp00500 error

Thanks for reaching out and providing the steps taken. Are you currently still experiencing issues with your device? What model is the Roku? 

Here for more on Xfinity Stream app on Roku system requirements: https://www.xfinity.com/support/articles/activate-xfinity-tv-app-on-roku

You can also send us a direct message with your full name and service address for further troubleshooting or opening a ticket for you. 

• Make sure you are signed in here in the Xfinity Forum. Click "Sign In" if necessary
• Click the "Direct Message" icon (square chat icon in the upper right corner of your screen next to the bell icon)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it