How to Enable Fast User Switching in the Mac Menu Bar

If two people share a Mac — or you keep separate work and personal accounts — logging out to switch is the slow way. Fast user switching jumps straight to another account from the menu bar while your session keeps running in the background: apps stay open, downloads keep downloading. The control is hidden by default; here's how to surface it and what to expect.

Enable fast user switching

1. Open System Settings → Control Center.
2. Scroll to Fast User Switching.
3. Set Show in Menu Bar to your preferred style, and optionally turn on Show in Control Center too.

The menu bar dropdown offers three looks plus off: Full Name (clear, but the widest thing on your menu bar), Account Name (your short Unix-style name — compact and cryptic), and Icon (a small silhouette, narrowest of all). The setting lives here on macOS 13 Ventura, 14 Sonoma, and 15 Sequoia alike, and switching the dropdown to Don't Show removes it again — that's the whole undo.

Switching accounts in practice

1. Click the fast user switching item in the menu bar.
2. Choose another account, or Login Window….
3. Authenticate as that user — their password, or Touch ID if they've enrolled a fingerprint on this Mac.

macOS suspends your screen and presents theirs; nothing in your session closes. Choosing Login Window… is a related trick worth knowing: it parks the Mac at the login screen without switching or logging anyone out — a fast way to walk away securely while a long export finishes in your account.

What it costs

• Memory. Every logged-in account holds its apps in RAM. On an 8 GB Mac, two heavy sessions genuinely compete; quit the big apps before switching if things feel sluggish.
• Shutdown friction. Restarting or shutting down warns that other users are logged in and may lose unsaved work, and asks for an admin password to proceed. Log the other account out properly when you're done for the day.
• Not a security substitute. Your session is suspended, not locked away — anyone with your password resumes exactly where you left off. Separate accounts plus their own passwords is the point.

Patterns that make it worthwhile

Fast user switching shines in a few specific setups. The family Mac: each person gets their own account, their own Desktop and browser history, and switching costs five seconds — which is the entire mechanism that keeps the kids' games out of your tax documents. The work/personal split on one machine: separate accounts give you separate everything — notifications, login items, Slack — and flipping between them is cleaner than any discipline about "not checking work stuff." And the troubleshooting account: a spare admin user is the classic diagnostic for "is this problem system-wide or just my account?" — fast switching makes testing in it painless.

Per-account settings genuinely stay per-account: Screen Time limits, Focus schedules, iCloud logins, and every System Settings choice. What's shared is the hardware and whatever sits in /Users/Shared. If you're setting this up for houseguests rather than housemates, the purpose-built Guest User account is the better tool — it wipes itself on logout and needs no password at all.

On narrow menu bars — any notch MacBook — choose the Icon style; Full Name is the single widest thing you can put in the bar. And if you'd rather spend no menu bar space at all, Show in Control Center alone tucks the same account list one click deeper, which suits Macs where switching happens twice a day rather than twice an hour.

Tune the login screen too

Fast switching lands you at the login window more often, so make it work well: showing a list of users on the Mac login screen turns typing a username into a single click.