loginwindow (Login Window) is a safe macOS system process. loginwindow manages your macOS login session from start to finish. It presents the login screen, authenticates your credentials, launches the user session (Finder, Dock, and login items), and handles logout, sleep, restart, and shutdown operations. Each logged-in user has their own loginwindow process. loginwindow running in the background during your session is normal — it's always present as the session manager. Be concerned if you experience repeated unexpected logouts (forced back to the login screen), as this usually indicates WindowServer crashes, GPU issues, or a failing system extension.
Login Window
loginwindow manages your macOS login session from start to finish. It presents the login screen, authenticates your credentials, launches the user session (Finder, Dock, and login items), and handles logout, sleep, restart, and shutdown operations. Each logged-in user has their own loginwindow process.
Stuck on the login screen or spinning wheel after entering password
Login items failing to launch after logging in
Force logout or desktop restart caused by WindowServer crash
Slow login due to too many startup items or a corrupted user profile
Go to System Settings > General > Login Items and remove any items you don't need. Third-party login items that crash can delay or hang the login process. Remove items one at a time to identify the problematic one.
Restart and hold Shift (Intel) or hold the power button and select Safe Mode (Apple Silicon). Safe Mode skips third-party login items and kernel extensions, which can help you get past a stuck login screen and diagnose the issue.
If login hangs after password entry, the login keychain may be corrupted. Boot into Safe Mode, open Keychain Access, go to Settings, and select 'Reset My Default Keychains.' You'll need to re-enter passwords for saved services.
If login is slow, create a new admin account in System Settings > Users & Groups. If the new account logs in quickly, the issue is in your user profile rather than a system-wide problem. You can then migrate your data to the new account.
loginwindow running in the background during your session is normal — it's always present as the session manager. Be concerned if you experience repeated unexpected logouts (forced back to the login screen), as this usually indicates WindowServer crashes, GPU issues, or a failing system extension.
CoreLock audits all login items and startup agents registered for your user session, flags unsigned or suspicious startup entries, and monitors for unauthorized additions to login items that could indicate malware establishing persistence.
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loginwindow is the macOS process that manages your entire user session. It handles the login screen, user authentication, launching your desktop environment (Finder, Dock, menu bar), loading login items, and processing logout/restart/shutdown requests. Every logged-in user has their own loginwindow process.
A stuck login screen is usually caused by a crashing login item, corrupted user preferences, or a full startup disk. Try booting into Safe Mode (hold Shift on Intel, or hold power and select Safe Mode on Apple Silicon) to bypass login items. If that works, the issue is a third-party login item or corrupted preferences.
Yes. loginwindow is a core Apple system process essential for the macOS user session. It is code-signed by Apple, runs as part of the system's authenticated session management, and is protected by System Integrity Protection. Every Mac has this process running for each logged-in user.
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