The fastest way: Settings app

Open the Settings app by pressing the Windows key and typing "settings", then press Enter. Go to Accounts on the left side, then click Your info at the top. You'll see your current username displayed under your profile picture. Click the blue Rename your account button.

Type your new username in the box that appears. Windows will accept letters, numbers, spaces, and some symbols (hyphens, underscores, periods). Keep it under 20 characters — longer names sometimes cause problems with older programs. Click Next, then Finish. You'll need to sign out and back in for the change to take effect, but you don't need to restart your computer.

This method changes only the display name that appears on your sign-in screen and Start menu. It does not change your user folder name (the folder in C:\Users\ where your files live), and it does not affect your Microsoft account email if you use one to sign in.

Key Takeaways

  • The Settings app method takes two minutes and requires only a sign-out and sign-in, not a full restart.
  • Changing your username in Settings updates only the display name, not the hidden user folder where your files are stored.
  • If you need to change the actual user folder name, you must use the Local Users and Groups tool or create a new account and transfer files.
  • Microsoft account usernames (your email address) cannot be changed from Windows itself — you change those on Microsoft's website.

When you need to change the user folder name too

The display name and the user folder name are separate things. When you change the name in Settings, your files stay in the old folder (for example, C:\Users\OldName\). Most people never notice this, but some older programs look for files in a specific folder path and won't find them if the path changed.

If you need to change the actual folder name, the process is more involved. You must create a new local account with the name you want, sign into it, copy all your files from the old account to the new one, then delete the old account. This takes 20 to 30 minutes and carries a small risk of losing files if something goes wrong, so back up your important documents first.

To do this safely: create a new local account (Settings > Accounts > Other people > Add account), sign into it, open File Explorer, navigate to C:\Users\, and copy your Documents, Desktop, Downloads, and Pictures folders from your old account folder to your new one. Once you've confirmed all your files are there, you can delete the old account from Settings > Accounts > Other people > select the old account > Delete.

If you sign in with a Microsoft account

Your Microsoft account email address is separate from your Windows username. Changing your Windows username in Settings does not change your email. If you want to change the email address you use to sign into Windows, you must go to account.microsoft.com, sign in, and change it there — Windows will sync the change the next time you restart.

If you want to switch from a Microsoft account to a local account (one that doesn't use an email), go to Settings > Accounts > Your info and click Sign in with a local account instead. Windows will ask you to create a new local username and password. Your files stay where they are, but you'll lose access to OneDrive, the Microsoft Store, and some cloud features unless you sign back in with your Microsoft account later.

Troubleshooting: the rename button is grayed out

If the Rename your account button won't click, you're likely signed in with a Microsoft account rather than a local account. The Settings app can only rename local accounts directly. You have two options: switch to a local account first (see the section above), or change your display name through your Microsoft account online at account.microsoft.com.

Another reason the button might be grayed out is that you don't have administrator rights on this computer. If someone else set up your account as a standard user, ask them to give you admin rights, or ask them to make the change for you. To check your account type, go to Settings > Accounts > Your info and look under "Account type" — it should say "Administrator".

What happens to your files and programs

Changing your username in Settings does not move, delete, or affect any of your files or programs. Everything stays exactly where it is. Your Documents, Desktop, Downloads, and Pictures folders remain in C:\Users\OldName\ (the old folder path). Programs you've installed continue to work normally.

The only visible change is what appears on your sign-in screen, your Start menu, and in Settings. If you use cloud storage like OneDrive or Google Drive, those services don't care what your Windows username is — they only care about the account you signed into them with.

Changing your username on a work or school computer

If your computer is connected to a workplace or school network, you likely cannot change your username yourself. Your IT department controls your account. Contact them to request a username change — they may or may not allow it depending on your organization's policies.

If you can change it, the process is usually the same (Settings > Accounts > Your info > Rename your account), but the change might take a few hours to sync across the network. If the rename button doesn't appear or doesn't work, your account is probably managed by your organization's network, and you'll need to ask IT to make the change.

Frequently Asked Questions

Will changing my username affect my passwords or sign-in?

No. Your password stays the same, and you sign in the same way. If you use a PIN or Windows Hello (face or fingerprint), those continue to work. The username change is purely cosmetic — it only changes what you see on the screen, not how you authenticate.

Can I use special characters or spaces in my new username?

Windows allows letters, numbers, spaces, hyphens, underscores, and periods. It does not allow symbols like @, #, $, %, or &. Keep the name under 20 characters to avoid problems with older software that has stricter limits.

What if I change my mind and want to change it back?

You can change your username as many times as you want. Just go back to Settings > Accounts > Your info > Rename your account and type a different name. Each change requires a sign-out and sign-in, but there's no limit to how often you can do it.

Does changing my Windows username change my email address?

No. If you sign in with a Microsoft account (using an email address), changing your Windows username does not change that email. To change your Microsoft account email, go to account.microsoft.com and update it there.

What if I forgot my username?

Your username appears on your sign-in screen above the password box. If you're already signed in, go to Settings > Accounts > Your info to see it. If you're locked out, restart your computer and look at the sign-in screen — your username is listed there.