Certificate Apocalypse: Bringing Your Chromecast Back from the Dead

Table of Contents

• 1 Disclaimer
• 2 Credit and Additional Resources
• 3 What Happened?
• 4 What to Do If You've Factory Reset Your Device
• 5 How to Fix It
• 6 The Technical Research Process

On March 9, 2025, many Chromecast 2nd generation and Chromecast Audio devices suddenly stopped working. Users like me could not cast content or set up their devices. This wasn't due to a software update or planned obsolescence, but most likely an expired device authentication certificate.

Disclaimer

USE THESE WORKAROUNDS AT YOUR OWN RISK

The information provided in this article is intended for educational purposes only. I am not affiliated with Google, and these workarounds have not been officially endorsed by Google or the manufacturers of your devices.

By following any instructions in this article:

• You acknowledge that you are modifying system settings beyond their intended use
• You accept full responsibility for any damage that may occur to your devices
• You understand that bypassing security features could potentially expose your devices to security risks
• You recognize that these are temporary solutions that may stop working at any time

I cannot and will not be held