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I'm using macOS Sierra and I can't open an application because it's from an unidentified developer. I went into my Security and Privacy settings and clicked on "open anyway" but it still doesn't let me open the app. How do I open an app from an "unidentified developer"?

  • Does right-click, Open work? – Tetsujin Dec 24 '16 at 19:10
  • @Tetsujin No, it doesn't work. – clickbait Dec 24 '16 at 19:39
  • OK, was worth a try. I'm not on Sierra yet, so I hope someone else knows – Tetsujin Dec 24 '16 at 19:42
  • That's how it's done on Sierra. I have Sierra and it works every time for me if I right-click and select Open. – fsb Jan 5 '17 at 0:18
  • In Sec & Priv, you've selected "Allow apps downloaded from:" Anywhere ? – Wayfaring Stranger Jan 5 '17 at 0:48
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There's a terminal command for this. I don't remember using it, and never wrote it down in my Sierra tweaks file. However:

sudo spctl --master-disable

From OSXDaily: How to Allow Apps from Anywhere in macOS Sierra Gatekeeper

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Go to System Preferences > Security & Privacy > General Look for "Allow applications downloaded from" and set it to Anywhere

Hope this helps!

  • 1
    The item "Anywhere" is only visible in Sierra after entering sudo spctl --master-disable. – klanomath Jan 5 '17 at 19:04
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you can do this with terminal

sudo xattr -d com.apple.quarantine /path/to/application.app

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