Modifying this control will update this page automatically
Mac User Guide
- Welcome
- What’s new in macOS Sequoia
-
- Intro to Continuity
- Use AirDrop to send items to nearby devices
- Hand off tasks between devices
- Control your iPhone from your Mac
- Copy and paste between devices
- Stream video and audio with AirPlay
- Make and receive calls and text messages on your Mac
- Use your iPhone internet connection with your Mac
- Share your Wi-Fi password with another device
- Use iPhone as a webcam
- Insert sketches, photos and scans from iPhone or iPad
- Unlock your Mac with Apple Watch
- Use your iPad as a second display
- Use one keyboard and mouse to control Mac and iPad
- Sync music, books and more between devices
-
- Control what you share
- Set up your Mac to be secure
- Allow apps to see the location of your Mac
- Use Private Browsing
- Keep your data safe
- Understand passwords
- Change weak or compromised passwords
- Keep your Apple Account secure
- Use Mail Privacy Protection
- Use Sign in with Apple for apps and websites
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
- Copyright
If you forgot your user or account name on Mac
When you set up your Mac, you entered your full name and created an account name. The account name is sometimes called a short name because it’s usually a shorter version of your full name or a name you created. When asked for your username — for example, in the login window or when connecting for file sharing or screen sharing — you can enter either your full name or your account name. The account name is used by your Mac to keep track of all your files and information. Because of this, the account name is permanent; you cannot change it without creating a completely new user.
If you can’t remember your account name, open a Finder 
window, then choose Go > Home. Your account name appears at the top of the Finder window.
Thanks for your feedback.