Cannot "change allow applications downloaded on" setting

I was not able to open. DMG files. Whenever I try, I get a message that it is "damaged" and should be thrown out. With some research, I found that it actually means that I need to update my security settings & privacy.

I go to System Preferences > Security & privacy, and sure enough "allow applications downloaded on" is set to "App Store." I click on the padlock, type my password, then replace it by "App Store and identified developers."

That is, right?

Nope.

I click again on the lock and close the window. When I reopen it Security & Privacy, it is the value return 'App Store '. I tried do not re - lock, I tried without closing the window, but to instead go to the main menu of system preferences, and tried opening. DMG files while the security and privacy pane is still open before, he returns to "App Store". (And Yes, I tried to restart the machine and it try again.) I also tried to change the setting and then by restarting, but who doesn't either.)

Is there a preference file, I need to delete somewhere?

Any help would be greatly appreciated.

That the setting does not stick is strange, but this has nothing to do with a disk image damaged. You can download all the images to disk regardless of the settings of call control. Gatekeeper all does is prevent you from installing anything on the disk image.

If you have a slow, unreliable connection and a disk image of large capacity, which could end up with a corrupted download.

Tags: Mac OS & System Software

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