Why you might want to change your computer name
Your computer has a name — the one Windows or Mac assigned when you first set it up. It shows up when you connect to a network, when you share files with other devices, and when you troubleshoot connection problems. Changing it is straightforward and takes about five minutes, but the reason matters.
You might change it to something you actually recognize instead of a string of numbers and letters. You might change it because you inherited a computer with a previous owner's name still on it. You might change it for privacy — a descriptive name like "Sarah's Laptop" tells anyone on your network more than you want them to know. Or you might change it because a program or network requires a specific naming format.
Changing your computer name does not affect your files, your passwords, or your security settings. It is purely a label. But you do need to restart your computer after you change it, and if you are on a work network, you may need permission from your IT department first.
Key Takeaways
- Your computer name appears on networks and in file-sharing dialogs, so changing it to something generic protects your privacy better than a descriptive personal name.
- In Windows, you change the name through Settings > System > About, then click Rename This PC and restart.
- On a Mac, you change the name through System Settings > General, click the Edit button next to the computer name, and restart.
- If you are on a work network or domain, contact your IT department before changing the name — some systems lock this setting.
- The change takes effect only after you restart your computer.
How to change your computer name in Windows 10 and 11
Open Settings by pressing the Windows key and typing "Settings", then click the Settings app. Go to System in the left sidebar, then scroll down and click About. You will see your current computer name listed under "Device name".
Click the button labeled "Rename this PC". A text box will appear with your current name highlighted. Delete it and type your new name. Computer names can be up to 63 characters, but shorter is better — use only letters, numbers, and hyphens. Avoid spaces and special characters, as some networks do not handle them well. Click Next, then Restart Now.
Your computer will restart and the new name will take effect. If you are on a work network and the restart fails or you see an error message, your IT department may have locked this setting. Contact them before trying again.
How to change your computer name on a Mac
Click the Apple menu in the top-left corner and select System Settings (or System Preferences on older versions). Click General in the sidebar. You will see your current computer name at the top of the window.
Click the Edit button next to the computer name. A text box will appear. Delete the current name and type your new one. Use only letters, numbers, and hyphens — avoid spaces and special characters. Click OK, then restart your Mac. You can restart when ready or wait until the next time you shut down.
If you see a lock icon next to the computer name field, your Mac is managed by your organization and you cannot change the name without permission. Contact your IT department or system administrator.
What to do if you cannot change the computer name
If you try to change the name and see an error message, or if the change does not stick after restart, the most common cause is that you do not have administrator rights on that account. Log out and log back in with an administrator account, then try again.
If you are on a work network or a school network, the computer may be joined to a domain or managed by your organization. In that case, the name change may be locked by your IT department. Contact them and explain what you are trying to do — they can either unlock the setting or change the name for you on their end.
If you are on your own computer and still cannot change the name, restart in Safe Mode (Windows) or Recovery Mode (Mac) and try again. If that does not work, the operating system itself may be corrupted, and you may need to reinstall it.
Privacy considerations when choosing a new name
The name you choose is visible to anyone on your network. If you use a coffee shop's WiFi, other people in that shop can see your computer name. If you are on a corporate network, your IT department and anyone with network access can see it. Choose a name that does not reveal personal information — avoid your full name, your location, or anything that identifies what kind of work you do.
Generic names like "Desktop" or "Laptop" or "Computer1" are better from a privacy standpoint. If you want something more memorable, use a nickname or a random word that means nothing to anyone else. The name serves you, not the other way around.
What happens after you change the computer name
After you restart, the new name appears when ready in network settings and file-sharing dialogs. If you have shared folders or printers set up, they will still work — the change does not break those connections. If you have mapped network drives (Windows) or connected to shared servers (Mac), those connections will also remain intact.
Some programs may reference the old computer name in their settings or logs. This is rare, but if you notice a program behaving oddly after the name change, restart that program or restart your computer again. If the problem persists, check the program's settings to see if it has a field for computer name that you need to update manually.
Frequently Asked Questions
Will changing my computer name affect my files or passwords?
No. Your files stay exactly where they are, and your passwords remain unchanged. The computer name is purely a label that appears on networks. Nothing on your computer depends on it.
Can I change my computer name without restarting?
Windows and Mac both require a restart for the change to take effect. You can change the name in settings without restarting, but the new name will not show up on your network or in file-sharing dialogs until you do.
What if I change my mind and want to change it again?
You can change it as many times as you want using the same process. Each change requires a restart. There is no limit to how many times you can do this.
Does my computer name affect my WiFi password or network security?
No. Your WiFi password and network security settings are separate from your computer name. Changing the name does not change how your network works or how find it is.
What if my work computer name is locked and I need to change it?
Contact your IT department or system administrator. Explain why you want to change it — they can either unlock the setting temporarily or change it for you. Do not try to work around the lock, as that may violate your organization's policies.