I am looking to turn off a feature in mountain lion where it asks if I am sure if I want to open every other application
It should ask you only once, when you open an application downloaded from the internet for the first time. Are you seeing this behavior more than once for particular apps? If so, you may not have permission to make the change necessary to clear the quarantine metadata. If you are running in a standard user account, rather than an admin account, try running the apps in question once from an admin account and see if that fixes the problem.
If you are only seeing the warning once, but it's bothering you for some reason, I would strongly advise finding a way to live with it. Mac OS X will protect you from malware that you may accidentally download and try to open, but only if you leave this system alone.
Changing the setting mende1 refers to will not change this behavior, and will significantly lower the security of your machine against malware. I do not recommend following his recommendation!
Thanks so much! That fixed it and for some reason it would ask me for the same application a lot more then once and pretty much most of the time...
You're help is much appreciated and I can't believe I missed it while looking through the settings
Hi Thomas, my Security settings are set to "Mac App Store and identified developers". I'm still getting this problem though I've allowed the app to run more than once as an Administrator. Specific apps that are experiencing this problem is Coda 2 by Panic, PDFpenPro by Smile Software, and Firefox.
Panic and Smile Software are identified developers if I'm not mistaken. And Transmit by Panic opens fine without these warnings.
Any idea why this is the case?
Currently Being ModeratedSep 1, 2012 4:32 AM (in response to David Wang1)
That warning is normal. You will see it for every application you download. It's meant to prevent a hacker from sneaking an application in on you under some other disguise. For example, a hacker could create an app called "nudephoto.jpg.app" and, with the extension hidden, it looks like just "nudephoto.jpg". When you try to open it, however, you get the warning that it's an app and not a photo as you were expecting. This is a very common trick. It's been done in the Mac world in the past, and is done frequently in the Windows world.
This is not Gatekeeper. Gatekeeper either allows an app (in which case it says nothing, and the system will give you the warning you mention), or it blocks the app from opening and shows you a message explaining why (with no option to open it).
If you keep getting this warning for certain apps, the quarantine metadata must not be clearing correctly for some reason. (Possibly a permissions issue with your machine... try repairing permissions.)
You can clear that quarantine flag manually by opening the Terminal and entering the following command (but do not press return yet):
xattr -d com.apple.quarantine
Make sure there is a space at the end of that. Next, find the app in the Finder and drag and drop it onto the Terminal window. That will insert the path to the app. Now switch back to the Terminal and press return. When the command prompt reappears, you can repeat for other apps or quit the Terminal, and the warning should not be displayed any further for those apps.
If there is an error saying "permission denied," you don't have permission to change that item, which must be the core of the problem. If repairing permissions doesn't work, try repeating the command with a "sudo" at the beginning (ie, "sudo xattr -d com.apple.quarantine /path/to/app"). When asked for your password, type it and press return, and note that it's normal for nothing to appear on the screen while you type.