What is SystemUIServer??

Discussion in 'macOS' started by BLDun, May 19, 2009.

  1. BLDun macrumors regular

    Jan 22, 2005
    I am having multiple problems with my iMac since I installed 10.5.7 and in trying to track down the problem I checked the activity monitor and I noticed that one of the list is in red letters instead of black. It is listed as SystemUIServer. I have no idea what it does or what it's for or why it is in red? Any help??
  2. WildCowboy Administrator/Editor


    Staff Member

    Jan 20, 2005
    We have a basic explanation of what SystemUIServer is here.

    Processes listed in red in Activity Monitor are currently hanging, which could account for the unspecified problems you're having with your computer.

    You can trying killing the process, as it will just restart itself within a few seconds. As for what's causing the hang, that can require some digging. Have you made any changes to your system recently?

    You can try dragging <username>/Library/Preferences/com.apple.systemuiserver.plist to your desktop to see if that fixes things. A new one will be created, but you'll still have the old one on your desktop to put back so that you don't lose your settings if you don't see any changes.
  3. BLDun thread starter macrumors regular

    Jan 22, 2005
    OK, I removed the SystemUIServer and almost immediately it came back and appeared in red and next to the name it says (not responding). I also tried moving the com.apple.systemuiserver.plist to the desktop but it doesn't seem to make any difference. I didn't have any of these problems before I installed the 10.5.7 update. Now I can't restart or shut down the computer without holding in the power button. I also cannot place the mouse on the menu bar near the bluetooth, volume control or time machine icons without immediately getting the beachball. I have lost all control of my wireless mouse and can't even access the bluetooth through system preferences. What a mess! I am lost here!
  4. BLDun thread starter macrumors regular

    Jan 22, 2005
    I think I found the problem. I unplugged the multiple USB hub and everything was fine. So I plugged it back in and began unplugging the USB cables one at a time until I found the problem. Turns out it was the bluetooth plug for my wireless keyboard. Guess I will need to get a new one tomorrow.
  5. IDMah macrumors 6502


    May 13, 2011
    old thread but why does it want a network connection?

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