Google TV Streamer 4K Authentication isn't successful

JohnFer — Sat, 27 Sep 2025 11:55:07 GMT

Until yesterday, my Chromecast was functioning properly. However, it abruptly stopped working, and I am now encountering an error message on the Google Home app stating that my device cannot be authenticated. I noticed that the serial number on my device indicates that it was manufactured for Sweden, but I am currently located in Finland. Could this be a regional issue causing the error?

Re: Google TV Streamer 4K Authentication isn't successful

JuanCH — Wed, 01 Oct 2025 02:22:57 GMT

Hi JohnFer,

Thanks for reaching out to the community! I understand that your Google TV Streamer (4K) abruptly stopped working, and you're now seeing an 'cannot be authenticated' error in the Google Home app. You suspect this is due to a regional mismatch—a Swedish model currently being used in Finland. No worries, I'm here to help!

Since the electrical supply and plug types are the same, a device manufactured for Sweden should work perfectly fine in Finland, without the need for any adapters or converters.

To isolate the root cause of this issue, I have some questions for you:

Does the 'cannot be authenticated' error appear immediately, or only when you try to cast something?
Is that error message appearing only in the Google Home app, or is it also showing up on your TV screen?
Have you already attempted any troubleshooting steps? If so, which ones did you try?
Is your Google Home app updated? Please check out the following link for your reference: Update the Google Home app

I look forward to your response.

Sincerely,
Juan

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Google TV Streamer 4K Authentication isn't successful

Re: Google TV Streamer 4K Authentication isn't successful