Yes, you can edit this without anything breaking.
There is nowhere in the dashboard to edit your username later so for many users who don’t know or don’t have access to the database this wont be possible for them, hence the warning when installing WordPress.
For those comfortable working in MySQL, it will be under the wp_users table in your database.
Related Posts:
- Replacing the WordPress password validation
- WordPress auto login after registration not working
- Allow up to 5 Concurrent Login Sessions
- Why does is_user_logged_in() return false after redirect from another site?
- Pre-populate Username Field
- How to keep track of user logins?
- Get user info outside WordPress
- How can I secure a WordPress blog using OpenID from a single provider?
- Is it possible to get a user with just the password field?
- Redirect after login based on user role (custom login page)
- Check for user meta data at Login
- Redirect User to Homepage if no other redirect is specified
- My custom page template with is_user_logged_in() does not detect that I’m logged in
- Use phpbb user database for WordPress
- WordPress to use Drupal users’ credentials
- Share user table from WP with Drupal
- How can I allow password reset based on logins containing the @ character?
- A way to count logged in users and display count?
- stop login if user_status equal zero
- How do i make my wordpress website private?
- Redirect user to login before viewing custom post
- Change the user_login at registration
- Max no of simultaneous active sessions for a single user
- When I try to login in wordpress it is showing “USER Doesn’t Exists”
- Should I encrypt the response that triggers an Ajax action? Is nonce sufficient?
- Redirect subscribers to last viewed page after log-in
- wordpress disable login for unverified user
- Reset Password policy
- Rewrite Rules and Login Issue
- Is possible to allow user to login with different role?
- Use WordPress Login for a non-wordpress site
- WordPress Login Customization for External Authentication
- Does wordpress support natively the concept of logging-in users? (not admins, but users of the website)
- Is there any action /filter hook I can use to disable login for some user role?
- How to check User Role and redirect to specific page according to Role when login in WordPress?
- Display video on homepage for users who have not logged in
- How do you manage your pages or functions that require logged-in users?
- How can i login with user’s password in WordPress being an admin?
- Delete a user from frontend
- Check if user is logged in via JS? [duplicate]
- Use members from 1 site on another one
- how redirect users to custom login page when “login to reply” is clicked? [duplicate]
- User(s) already exists show error please provide a valid username
- wp_generate_password sets password but can’t login using created password
- add class to element if user is not logged in [closed]
- Is there a way to call via javascript if a user is logged-in on a static html file?
- Restricting wordpress login sessions for a web app
- How to connect wordpress user with my own APP user?
- How to change default username field after login
- The same session information for peer users on two different WordPress servers
- WP users cant reset password
- Check for empty username or password on login
- $user_login is not working if author has only 1 post
- Specific Content on pages based on user
- user and usermeta table not found
- custom login form, guide me
- Changing user_login ends current session
- Current User Seeing Another Logged In User Info
- Redirect based on log-in status per JavaScript
- Securely log in a user without a password using a link?
- Integrating Facebook Registration (and Login) on a WordPress page
- WordPress – Security Question at Login from User’s Meta Data
- determine active user browser at the same time
- How to track all users logged into a site?
- Cant edit profile from frontend
- How to authenticate/verify login credentials & check for user meta without logging in?
- How to Merge Two Authors Into One?
- Whats the best way to share user data across multiple WordPress websites?
- User-edit role setting distinct from wp_capabilities? [closed]
- Hide Admin Menu for Specific User ID who has administrator Role
- Problem with Hebrew characters in username
- Display edit link if post author is current user
- Do not allow users to create new posts and pages
- Get user input from a form
- User fields that can be edited by administrator?
- Admins can’t edit each other’s posts
- Update user_login to change username
- Multiple authors with different “author roles”
- Exclude subscriber users from user list
- How can I check if a user’s email exists in the database
- Exclude admin from user list
- How to display total number of post done by user, it should display at authors page wordpress [duplicate]
- Can i add password field into my wp registration form?
- User capability for editing their own comments
- Allow Contributors to Upload Files
- OAuth 2 and saving the authenticated user
- How to get the count
- What is correct way to change user’s email?
- wp_dropdown_users() to include null value
- Add number of members to “Right Now” dashboard widget
- How can admins to be notified of changes when users change their WP profiles?
- Can you Recover a WordPress User from a Backup
- wp-admin/users.php Add a column with last name
- get_users – Sort by a different meta_value than search criteria
- How to prevent deleteting specific user?
- How to get the username for a custom link
- Restrict Access to the User Profile
- How to get only 1 role from user
- User agent stylesheet distorting site [closed]
- Remove My Account Menu items in Woocommerce based on user roles