X to end Twitter.com domain and you need to act fast

After changing to X.com, several users of X still prefer to use the Twitter.com domain name and that has been okay until now.

X on 26 October quietly announced that it will be retiring the twitter.com domain name in November, making it mandatory for all X users to use X.com instead.

Specifically, all users are expected to re-enroll their security keys which were associated with the old domain by 10 November to continue using the platform.

By November 10, we’re asking all accounts that use a security key as their two factor authentication (2FA) method to re-enroll their key to continue accessing X. You can re-enroll your existing security key, or enroll a new one.

A reminder: if you enroll a new security key, any…

— Safety (@Safety) October 24, 2025

Not a security issue

X, through its X Safety handle on 24 October issued a directive that all users should re-enrol their security keys by 10 November.

With no explanations as to why, the tweet generated more questions than answers, with many users wondering if there was a security breach.

The company then clarified on 26 October that the step is to allow the retirement of the Twitter.com domain, making X.com the exclusive domain name.

To clarify: this change is not related to any security concern, and only impacts Yubikeys and passkeys – not other 2FA methods (such as authenticator apps). Security keys enrolled as a 2FA method are currently tied to the twitter[.]com domain. Re-enrolling your security key will… https://t.co/PlXOTnNXPM

— Safety (@Safety) October 26, 2025

For three years since billionaire Elon Musk bought the then Twitter, users have had the freedom to use the old domain which has been redirected to the new after the name change.

Some users have been sentimental about it, insisting that they prefer the former domain. With this new policy however, all X users must use the new domain name or they will not be able to access the platform.

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What you must do

If you use any form of two-factor authentication such as a security key from Google Authenticator, you need to re-enrol the keys with the X.com domain, since they have been tied to the old one.

To do this, go to Settings on your X app and click your profile icon, then Settings and privacy, Security and account access, Security, then Two-factor authentication and follow the instructions to re-enrol.

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