The name on your Windows 11 sign-in screen comes from your user account. Maybe it shows an old nickname, a typo, or the name of whoever set up the PC. How you change it depends on the type of account you sign in with: a Microsoft account (an email address) or a local account (a name that only exists on this PC).
Use the matching method below.
The name Windows shows for a Microsoft account is stored online, not on the PC, so you change it on Microsoft's website:
Microsoft says the change can take up to 24 hours to show everywhere. On the PC, sign out and back in (or restart) once it has updated.
This also changes your name in Outlook.com, OneDrive and other Microsoft services, because it is the same account.
You must be signed in as an administrator.
User names can't contain these characters: / \ [ ] " : ; | < > + = , ? * %
The classic User Accounts window gives you a little more control, such as setting a separate full name:
netplwiz and press Enter.Only change accounts you own or manage. On a work or school PC, account names are usually controlled by the organisation, and these options may be greyed out.
Renaming an account does not rename its profile folder. If the folder is C:\Users\John, it stays C:\Users\John even after you rename the account to "Jane". Programs and settings point to that folder, so renaming it by hand can break your profile.
If you really need a folder with a new name, the safe way is to create a new account with the name you want, move your files across, then remove the old account once everything works. Back up first - see how to back up your Windows 11 PC.
If you want the PC to stop showing your Microsoft account details altogether, you can sign in with a local account instead. That has trade-offs (no settings sync, and your BitLocker key backup works differently), which are explained in how to switch to a local account in Windows 11.
If you also want to change what other devices see on your home network, that is the PC's name, not your account name - it's set in Settings > System > About > Rename this PC.
For a Microsoft account, the new name can take up to 24 hours to show everywhere, and Windows usually picks it up after you sign out and back in or restart. For a local account, sign out once after renaming.
No. The profile folder keeps the name it got when the account was created. Renaming the account only changes the name you see on the sign-in screen and in Settings.
Yes, to rename a local account with Control Panel or netplwiz you must be signed in as an administrator. A Microsoft account name is changed online by the account owner.
Windows user names can't contain / \\ [ ] " : ; | < > + = , ? * or %.
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