High Sierra won't let me open app from unidentified developer despite gatekeeper settings

In some cases, this still does not work, like it did in my case (actually High Sierra 10.13.2).

It looks like the "Allow"-Button does not work at all. You can click it, but nothing happens.

You might have MagicPrefs installed or another Mouse Tweaking Tool.

Disable MagicPrefs for a minute and everything works as explained in the FAQs.

MacOSX takes care, no other program clicks around in your security-settings, for rather obvious reasons.

As i did not find any single statement about this issue despite googling around for hours, i simply had to add this here.

FWIW, there is no "Anywhere" setting in High Sierra. I did run into a problem installing VirtualBox. Once the install failed dialog came up I had to open System Preferences > Security & Privacy and allow it to run. You might check that. Otherwise, I don't know.

Try right clicking on the file and chose "Open" from the popup menu.

Tried right click and select open?

Do you have some mouse-tweaking tool running? Like MagicPrefs? With this running, the "allow"-button does not work. See my last post about that.

Open terminal, and put in: sudo spctl --master-disable

This will give the old "anywhere"-option, when you open settings -> security

How to Disable Gatekeeper in macOS Sierra - TekRevue

I'm trying to install VirtualBox as well and reached the point where they tell me to open Security Preferences > Security & Privacy to click Allow the software install to load. Clicking the Allow button does nothing. The install won't continue, rerunning the install continues to error, running with a sudo command in terminal runs into the same error, no prompt appears. Seems like a pretty serious bug for developers.

This all sounds very helpful indeed but I don’t know what the MagicPrefs would be or even if I have that at all. I don’t use a mouse either, I imagine that would affect that solution as well. I only use the trackpad as it is a laptop and I don’t like using a mouse.

It really works!!

Thank you

My problem is my app still won't open even after doing all of this. I have macOS High Sierra 10.13.2

CristalKnight wrote:

My problem is my app still won't open even after doing all of this. I have macOS High Sierra 10.13.2

What app would that be?

SmartCard Plugin

Do you mean the Blitz Smart Card Plugin adapter or a different one?

It's possible whichever one you mean is not compatible with High Sierra.

No it’s a different kind. It’s for opus card in Quebec.