How to Change Your Username in Windows 10

Your username in Windows 10 shapes more than just how your account looks — it affects folder names, display settings, and how other users on a shared PC identify you. The process of changing it, however, isn't as straightforward as editing a single field. Windows 10 actually maintains two separate name layers: the display name shown on the login screen and Start menu, and the underlying account folder name stored in C:Users. Understanding which one you're changing — and why they behave differently — is the key to doing this correctly.

The Two Types of Usernames in Windows 10

Before touching any settings, it helps to know what you're actually dealing with.

Display name — This is the name shown on the login screen, the Start menu, and in account settings. It's cosmetic and relatively easy to change.

Account folder name — This is the actual folder in C:Users (e.g., C:UsersJohnD). Windows creates this when the account is first set up and doesn't automatically update it when you change your display name. Changing this requires more steps and carries more risk.

The method you need depends entirely on which of these you want to change — and what type of account you're using.

Method 1: Change the Display Name on a Local Account

If you're using a local account (not connected to a Microsoft account), here's how to update the name that appears at login:

1. Open the Control Panel — search for it in the Start menu
2. Go to User Accounts
3. Click Change your account name
4. Enter the new name and click Change Name

This updates what Windows displays on the login screen and Start menu. It does not rename the folder in C:Users.

Method 2: Change the Display Name on a Microsoft Account

If your Windows 10 account is linked to a Microsoft account (you sign in with an email address), the display name is pulled directly from your Microsoft profile — not from a local setting.

To change it:

1. Go to account.microsoft.com in a browser
2. Sign in with your Microsoft account
3. Navigate to Your info and select Edit name
4. Update the name and save

Changes typically sync back to your Windows 10 device within a session restart or two. Changing it locally in Windows Settings won't stick if a Microsoft account is in play — the online profile takes precedence.

Method 3: Rename the User Account Folder (Advanced)

This is the step most guides skip over, and it's where things get more complex. 🔧

Renaming the folder in C:Users requires administrator access and some care, because many apps, scripts, and system paths reference that folder directly. If those paths break, apps may fail to find their data or configurations.

The general process involves:

1. Creating a temporary administrator account to work from (you can't rename a folder while logged into it)
2. Logging into the temporary account
3. Renaming the original user folder in C:Users via File Explorer or Command Prompt
4. Updating the registry path under HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionProfileList to point to the renamed folder
5. Logging back into the original account to verify everything still works

This method carries real risk. Registry edits made incorrectly can cause login failures or broken profiles. It's generally recommended only when the folder name mismatch genuinely causes problems — for example, if software is referencing hardcoded paths, or the account was set up with a temporary or placeholder name.

What Changes and What Doesn't 📋

Factors That Affect Which Method You Need

Not every user is in the same situation, and the right path depends on several variables:

Account type — Local accounts and Microsoft accounts behave differently. The steps that work for one won't always apply to the other.

Administrator access — Standard user accounts can't rename user folders or access certain settings. You'll need administrator privileges for anything beyond the basic display name change.

Shared or managed PC — On work or school devices managed through an organization's IT environment (such as Azure Active Directory or a domain), username changes may be restricted or controlled centrally. Changes made locally may be overwritten by policy.

Whether apps are affected — If you use software that stores data in paths referencing your username folder, a folder rename could disrupt those apps. If your setup is simple — just a personal PC with standard apps — the risk is lower.

Why you're changing it — Fixing a typo in a display name is trivial. Correcting a folder name that's causing software issues is significantly more involved. The level of effort is proportional to what's actually broken.

A Note on System Stability ⚠️

Changing a display name in Windows 10 carries virtually no risk. Renaming the underlying user folder is a different matter — it's a supported operation, but one where mistakes in the registry or folder path can lock you out of your own account. If you're taking that route, backing up your data and creating a system restore point first is a sensible precaution, not an overreaction.

Whether the simple display name change covers your needs — or whether you're dealing with a folder-level mismatch that requires the deeper approach — depends on what's driving the change and how your specific Windows 10 setup is configured.