How can I get rid of this message?


I've tried clicking both: "Cancel" and "Run Diagnostics" buttons. I've also tried to turn off and back on the Wi-fi. I don't want to restart my mac as there are some important processes running.

I'm using a MacBook Pro (Retina) - macOS High Sierra 10.13.1

  • 4
    To clarify, clicking both "Cancel" and "Run Diagnostics" do nothing?
    – Jake3231
    Commented Dec 2, 2017 at 20:54
  • @Jake3231 Indeed, nothing happens when I click either of them. Perhaps I could close the process from Activity Monitor but I kinda don't know how the process behind that windows is called ...
    – Cajuu'
    Commented Dec 2, 2017 at 21:00
  • I thought about the same thing, but I'm not sure what that process would be called either. If someone knows the correct process, that would be good.
    – Jake3231
    Commented Dec 2, 2017 at 21:01
  • 1
    Have you tried turning WiFi off, and turning bluetooth off both on the mac and the ios device? Commented Dec 3, 2017 at 1:41
  • @Cajuu', How did you manage to get that to hang?
    – Pacerier
    Commented May 24, 2018 at 18:01

4 Answers 4

  1. Go to Spotlight (magnifying glass in top corner) / Finder > Activity Monitor
  2. Search for SystemUIServer in CPU tab using the search bar located at top right corner
  3. Force quit it
  • 3
    You can also try killall SystemUIServer in Terminal.
    – rgajrawala
    Commented Apr 10, 2018 at 16:13

try connecting after removing any USB device connected. It worked for me.

  • 1
    I am like, "WTF"? It worked, I would ask how, but the better question is WHY? Commented Jan 9, 2020 at 13:59

I followed many tips provided thru various Apple / Mac blogs. I did all of the obvious and logical tips, router, turn-off, turn-on WiFi and my MacBook Air wouldn't connect to my wireless network, or via a Bluetooth hotspot from my phone. It would connect on Bluetooth, even sending a pairing request only to disconnect. I could not load my Network name when choosing a network

So, I connected my iPhone (Did have an active connection to my wireless network) via USB as an option in my Network on the Mac. Then went to: System Preferences > Network. Under location, I went to Edit Location, created a location named "Untitled". Instead of Automatic, I chose "Untitled." I instantly received a password request for my network. I'm now connected and Location has defaulted to Automatic.Removed the iPhone connection and I'm up and running. It wasn't pretty, but it worked.

  • Or my other favorite: connect via phone to the wifi, then connect via bluetooth to the phone. Hacky but sometimes works :)
    – rogerdpack
    Commented Aug 9, 2018 at 15:22

Go to System Preferences > Network > Advanced...

Select the Wi-Fi tab and you will see the list of Preferred Networks. Select the offending Wi-Fi network from the list, and click the minus button to remove it.

Now, when you click Cancel on that pop-up it shouldn't reappear.

  • Doesn't look like it works. The problem still persists
    – Cajuu'
    Commented Dec 2, 2017 at 21:09
  • 1
    This might be a little overkill, but ... Go to System Preferences > Network. Find that network in the list and then uncheck "Automatically join this network". Then, turn off your Wi-Fi. Next, go to Advanced... uncheck "Remember networks this computer has joined", and then select that network and click the minus button. Then, turn on your Wi-Fi again.
    – Paul Brady
    Commented Dec 2, 2017 at 21:57

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