How long does it take for a new username to become active?

When you change your username on Twitter, the new username typically becomes active immediately after you confirm the change. Here's what happens when you update your username:

1. **Confirmation:** After entering your new username and clicking "Save changes," Twitter processes the request almost instantly.

2. **Immediate Activation:** Your new username should be active immediately across the Twitter platform. This means that your profile URL, tweets, and interactions will display the new username.

3. **Notifications:** Twitter may notify your followers about the username change, depending on their notification settings. This helps inform others about the update to your profile.

4. **Search and Discovery:** Users searching for your profile by the new username should be able to find and access it without delay.

### Considerations:

- **Profile Updates:** While the username change is immediate, it's a good practice to review your profile and update any links or references to your old username, especially if you have external websites or social media profiles linked to your Twitter account.

- **Mentions and Tags:** Previous mentions of your old username in tweets may not automatically update to your new username. It's recommended to inform followers and contacts about the username change to avoid confusion.

Overall, Twitter's system ensures that username changes take effect promptly, allowing users to update their online identity efficiently. If you encounter any issues with the activation of your new username, checking Twitter's help center or contacting support may provide further assistance.