The fastest way to change your username depends on your operating system
On Windows 10 or 11, you change your username through Settings in about three minutes. On a Mac, the process is similar but uses System Settings instead. Both let you change the name that appears on your login screen and in the top-right corner of your desktop — the visible username — without touching your actual account folder, which stays the same behind the scenes.
The reason this matters: your computer stores files in a folder named after your original account. Changing your visible username does not rename that folder, so your files stay exactly where they are. You will not lose anything, and programs that know where to find your files will keep working.
If you have never done this before, the steps below walk you through the exact screens you will see. The whole process takes less time than restarting your computer.
Key Takeaways
- Windows users open Settings, go to Accounts, and change the name in the "Your info" section without needing a password.
- Mac users open System Settings, select Users & Groups, unlock the panel with their password, and edit the Full Name field.
- Your visible username changes when ready on the login screen and desktop, but your file folder keeps its original name.
- You do not need to restart your computer after changing your username, though some programs may need to be closed and reopened to show the new name.
- If you are an administrator on your computer, you can change your own username; if you are a standard user, you need an administrator to make the change.
Changing your username on Windows 10 or 11
Open the Start menu and type "Settings" into the search box, then click the Settings app that appears. Once Settings opens, click "Accounts" on the left side of the window.
In the Accounts section, click "Your info" at the top of the left menu. You will see your current username displayed under a profile picture. Click the "Rename your account" button. A text box will appear with your current name highlighted. Delete the old name and type your new username, then click "Next" and then "Finish".
Your new username appears on the Windows login screen the next time you restart, and it shows in the top-right corner of your desktop when ready. You do not need to restart right away — the change takes effect as soon as you close the Settings window.
Changing your username on macOS
Click the Apple menu in the top-left corner of your screen and select "System Settings" (or "System Preferences" on older Macs). In System Settings, click "General" in the left sidebar, then look for "Users & Groups" — on some Mac versions this appears under a different menu, so if you do not see it under General, scroll down the left sidebar until you find it.
Click "Users & Groups" and you will see a list of user accounts on the left. Your account is usually highlighted. If the panel appears locked (you will see a padlock icon), click the padlock and enter your password to unlock it. Once unlocked, right-click your account name and select "Advanced Options".
In the Advanced Options window, find the "Full Name" field and change it to your new username. Click "OK" to save the change. Your new name appears on the login screen and in the top-right corner of your desktop when ready.
What happens to your files and programs after you change your username
Your files do not move and your programs do not break. Both Windows and Mac keep your files in a folder with your original account name, even after you change your visible username. When you open your file manager or Finder, you still see all your documents, downloads, and desktop files in the same places.
Programs that were already installed continue to work normally. Some programs display your username in their settings or user profiles, and they may show your old name until you close and reopen them. This is not a problem — the programs are just reading what they stored before you made the change.
If you use cloud storage like OneDrive, Google Drive, or iCloud, your account stays connected and syncs normally. The username change only affects what displays on your computer, not your online accounts.
If you cannot find the username change option
On Windows, the "Rename your account" button only appears if you are signed in as an administrator. If you do not see it, your account is a standard user account, which means someone else on your computer has administrator rights. That person needs to open Settings, go to Accounts, click "Other people" instead of "Your info", find your account, and click "Rename".
On a Mac, if the Users & Groups panel is locked and you cannot unlock it with your password, your account does not have administrator rights. Ask whoever set up the computer to unlock the panel and make the change for you.
If you are the only person who uses the computer and you cannot remember your password, you may need to reset it through your Apple ID or Microsoft account before you can make changes. Both companies have account recovery options on their websites.
Changing your username without restarting
You do not have to restart your computer after changing your username. The change takes effect when ready in most places — your login screen, your desktop, and your file manager all show the new name right away.
Some programs cache your username when they start up, so they may still show your old name until you close and reopen them. This is especially true for email clients, chat programs, and office software. If a program shows your old username and it bothers you, close the program completely and open it again.
If you change your username and then when ready try to sign into a website or service that uses your computer's username as part of its login, that service may not recognize the change for a few minutes. This is rare, but if it happens, wait a moment and try again.
Changing your username back if you made a mistake
You can change your username as many times as you want using the same steps. If you typed something wrong or changed your mind, just go back to Settings (Windows) or System Settings (Mac) and follow the same process with your new choice.
There is no limit to how many times you can do this, and each change takes effect when ready. Your files and programs are not affected by multiple changes — they only care about the folder your account uses, which never changes.
Frequently Asked Questions
Will changing my username delete my files or programs?
No. Your files stay in the same folder on your computer, and all your programs continue to work. The visible username change only affects what displays on your login screen and desktop — it does not touch the account folder where Windows or Mac stores everything.
Can I change my username if I am not an administrator?
No, you need administrator rights to change your own username. If your account is a standard user, ask the administrator on your computer to make the change for you. On Windows, they go to Settings > Accounts > Other people and click your account. On Mac, they unlock Users & Groups and edit your Full Name field.
Do I need to change my password when I change my username?
No. Your password stays the same. The username and password are separate — changing one does not affect the other. You will still log in with the same password you used before.
What if a program still shows my old username after I changed it?
Close the program completely and open it again. Some programs read your username when they start up and keep that information in memory. Restarting the program forces it to read your new username from the system.
Can I change my username to anything I want?
On Windows, you can use most characters, but avoid symbols like asterisks, question marks, and slashes. On Mac, stick to letters, numbers, spaces, and hyphens. Both systems accept usernames up to 20 characters. If you try to use a character the system does not allow, it will tell you and ask you to pick something else.