What is SystemUIServer on Mac?
By Junaid, maker of Taskglass · Last reviewed
Hosts some menu bar items and other bits of the system interface.
SystemUIServer is a long-standing macOS process that hosts some menu bar items and related system interface pieces. In recent versions of macOS most of Apple's menu bar icons moved to Control Center, so SystemUIServer usually does very little. If something it shows freezes, quitting it is harmless because it relaunches immediately.
- Category
- macOS system
- Made by
- Apple
- Safe to quit:
- With care
Shown in Activity Monitor as SystemUIServer
Why is SystemUIServer using so much CPU or memory?
- A menu bar item it hosts is stuck or updating constantly
- A glitch after waking from sleep or connecting a display
What to do
- 1Wait a moment
- 2Force quit it; macOS relaunches it right away
- 3Restart your Mac if it keeps happening
Safe to quit? With care.
It relaunches immediately; menu bar items may blink out for a second.
Typical usage
Rough ranges on Apple Silicon Macs. Yours will vary.
- CPU
- Near 0%
- Memory
- 20–100 MB
Related processes
Part of the Taskglass Process Library