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For some time (about a month give or take) the Network Preferences pane in System Preferences has been freezing every time I open it.

Wi-Fi works fine and I can connect using the menubar icon, but I can't change anything in the Network preference pane. System Preferences also works fine, except for the Network preference pane.

When I open the Network preferences pane, the app freezes and starts eating up system resources.

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I've used the Tracking-blocker Disconnects Mac App since August, but even with the service turned off and the program not running, the Network preference pane still freezes.

System info:
MacOS Sierra - 10.12.6 (16G29)
MacBook Pro (Retina, 15-inch, Mid 2015)
2,5 GHz Intel Core i7 16 GB 1600 MHz DDR3
Intel Iris Pro 1536 MB

Updates: 1 | I've tried booting into Safe Mode which hasn't solved the problem. 2 | I've done a hardware test, which produced no errors and didn't solve the problem. 3 | I've done a SMC reset which hasn't solved the problem.

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  • 1
    Boot into Safe Mode (hold Shift while booting) and see if the problem goes away.
    – Allan
    Dec 29, 2017 at 22:18
  • @Allan problem persists when booted into Safe Mode
    – ssssaaaa
    Jan 28, 2018 at 16:29
  • That tells you that it's not a 3rd party app that's causing it. The next thing I would try is installing a clean version of macOS on a USB stick/drive to see if the problem goes away. I would also try running AHT - Apple Hardware Test. Hold D while booting from a powered off state with the AC adapter attached.
    – Allan
    Jan 28, 2018 at 16:44
  • @Allan ran a hardware test last night, but it returned no errors. this is getting more and more mysterious!
    – ssssaaaa
    Feb 1, 2018 at 10:43
  • 1
    See: apple.stackexchange.com/questions/135255/…
    – Allan
    Feb 2, 2018 at 11:25

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