Connecting to Apple TV With security key’s not working?

One can go to Settings > Users and Accounts > [signed out user] > Update Apple ID Settings and then one is presented with an option to "Update your Apple ID" with one of your devices. In my case I see an "Update with iPhone" button. The sign in page should take you here after the error above but instead it leaves you totally stranded without even a suggestion of what to do.

Hi @dawngreg08,

I found this thread searching this error:

Sign In with Security Keys Isn't Supported on Apple TV

Security keys aren't supported on Apple TV. You can sign in with your iOS device, or sign in with a different Apple ID that doesn't use security keys.

How does one "sign in with [one's] iOS device?"

When you "Update" with an iOS device it is similar to the bluetooth + wifi initial setup of an Apple TV where one brings one's device close and then chooses Connect. I had to lock my iPhone to see the option, as the instructions warn one might have to do. Once you authenticate on the iOS device the Apple TV signs in.

Hello Lindsay_j,

We understand you're not able to update your apps or log into your Apple ID. We're here to help.

If you set up to use security keys for your Apple ID then the article you came provides help for that issue.

"Use Security Keys for Apple ID

When you use Security Keys for Apple ID, you need a trusted device or a security key to:

• Sign in with your Apple ID on a new device or on the web
• Reset your Apple ID password or unlock your Apple ID
• Add additional security keys or remove a security key

Keep your security keys in a safe place, and consider keeping a security key in more than one place. For example, keep one key at home and one key at work. If you're traveling, you might want to leave one of your security keys at home."

About Security Keys for Apple ID

If you're getting a message that your Apple ID has been disabled or locked then follow the steps in this article: If your Apple ID is locked or disabled

If the steps in those articles don't resolve your issue provide us a little more information so we can point you in the right direction for resolution.

Thank you for using Apple Support Communities.

Take care!

In my case this whole cycle was triggered by a password update.