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The Google Chromecast 2's device authentication certificate expired on March 9th/10th 2025, preventing use of all devices via any method. Workarounds are known already, but no word yet from Google on a fix from their end, or if one is even coming.
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Background
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$2
[Incident]
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Impartial and complete description of the events, including actions taken by the company, and the timeline of the incident coming to the public's attention.
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[Company]'s response
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None so far.
Lawsuit
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Consumer response
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References
https://www.androidauthority.com/chromecast-device-authentication-error-3533424/ Article from Android Authority
https://www.themirror.com/tech/google-chromecast-down-users-report-1020960 - News article from the Mirror US
https://www.reddit.com/r/Chromecast/comments/1j7lhrs/the_chromecast_2s_device_authentication/ - Reddit thread discussing the issue in detail, with workarounds in the replies.
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