The fastest way depends on your operating system
On Windows 10 or 11, you change your username through Settings in about two minutes. On a Mac, the process is slightly different and lives in System Preferences. Both paths are straightforward if you know where to look, and you do not need administrator permission on most machines — though you will need to know your current password.
The username is what appears on your login screen and in the top-right corner of your desktop. Changing it does not affect your files, your email, or any programs you have installed. Everything stays where it is.
Key Takeaways
- Windows users open Settings, go to Accounts, then select your account and choose "Rename your account" — the change takes effect when ready.
- Mac users open System Preferences, select Users & Groups, unlock the padlock with their password, then right-click their account and choose "Advanced Options" to edit the username field.
- Your files and programs are not affected by a username change; only the name that appears on your login screen changes.
- If you are locked out of your account or do not remember your password, you will need to use your recovery options before you can make this change.
Changing your username on Windows 10 or 11
Open Settings by pressing the Windows key and typing "Settings," then press Enter. Click on Accounts in the left sidebar. You will see your account listed under "Your info" at the top of the page.
Click the blue link that says Rename your account. A small window will pop up with your current username highlighted in a text box. Delete the old name and type your new username, then click Next. Windows will ask you to confirm — click Finish. Your new username appears on the login screen the next time you restart your computer, though it takes effect when ready in most programs.
If you do not see the "Rename your account" option, you may be using a Microsoft account instead of a local account. Microsoft accounts are tied to your email address and require a different process — you would change the display name through your Microsoft account settings online, not on the laptop itself.
Changing your username on a Mac
Click the Apple menu in the top-left corner and select System Preferences (or System Settings on newer Macs). Look for Users & Groups and click it. You may see a padlock icon at the bottom of the window — if you do, click it and enter your password to unlock the settings.
Right-click your account name in the left sidebar and select Advanced Options. You will see several fields, including one labeled Full Name and another labeled Account name. The "Full Name" is what appears on your login screen and in the top-right corner. Edit this field to your new name, then close the window. The change takes effect when ready.
Do not change the "Account name" field unless you know what you are doing — that is the technical username your Mac uses behind the scenes, and changing it can cause problems with file permissions and program access.
What happens to your files and programs
Your files stay exactly where they are. Documents, photos, downloads, and everything in your user folder remain accessible under the new username. Programs you have installed continue to work normally. Email accounts, browser bookmarks, and saved passwords are not affected.
The only thing that changes is the name displayed on your login screen and in system menus. If you have shared folders or if other people use the same computer, they will see your new username when they access shared files or look at the user list.
If you cannot find the rename option
On Windows, the "Rename your account" option only appears if you are logged in to a local account. If you signed in with your Microsoft email address, Windows treats it as a Microsoft account, and you cannot rename it from the laptop. Instead, you would need to change your display name through your Microsoft account online at account.microsoft.com.
On a Mac, if the Users & Groups section is grayed out or you cannot unlock the padlock, you may not have administrator permission on this account. Ask whoever set up the computer to make the change, or use their administrator account to unlock the settings.
Troubleshooting a stuck or failed change
If you typed a new username but it did not take effect, restart your computer. The change usually appears on the login screen after a restart, even if it seems to have failed the first time.
If you see an error message saying the username is already in use or contains invalid characters, try a different name. Usernames cannot contain spaces or most special characters — stick to letters, numbers, hyphens, and underscores. If the error persists, restart your computer and try again.
On a Mac, if you changed the "Account name" by mistake and now programs are not working, change it back to what it was before. The "Full Name" is the safe field to edit.
Frequently Asked Questions
Will changing my username affect my email or online accounts?
No. Your email address, social media accounts, and online passwords are not connected to your laptop username. Changing your laptop username does not log you out of anything or require you to update passwords anywhere.
Can I change my username if I forgot my password?
No. You need to log in to your account to change the username. If you forgot your password, you will need to reset it first using your recovery email or phone number. Once you are logged back in, you can change the username.
What if someone else uses my computer and has their own account?
Each account has its own username and login screen. Changing your username does not affect other accounts on the same computer. Each person can change their own username independently.
Does changing my username affect my Wi-Fi or printer connection?
No. Your network and printer settings are stored separately from your username. Changing your username will not disconnect you from Wi-Fi or require you to reconnect printers.
Can I change my username back to what it was before?
Yes. Follow the same steps and type your old username. There is no limit to how many times you can change it, and no record is kept of previous usernames.