macOS 10.12.4 Beta - Disable Verifying Check Dialog on Opening Files

[WalterZheng]

(This image is pulled up from this thread: https://forums.macrumors.com/thread...ialog-on-opening-any-movie-zip-files.2030204/)

It seems the new Sierra 10.12.4 Beta file verifying upon files like .pkg and .mkv or anything else is annoying too many people.

And here I find a solution to solve it by completely bypassing the System Check, which may seem to be either ANGEL or EVIL choice, and you roll the dice.

Open up terminal.app, and run this:

defaults write com.apple.LaunchServices LSQuarantine -bool NO

IMPORTANT:
1: Restart is required to make it work.
2: Be aware that this effectively disables Gatekeeper and XProtect. (Thanks to @KALLT.)

REFERENCES:
(You will find these references are much more tasteful than this thread I'm typewriting, go ahead and you will get more.)
1. http://hints.macworld.com/article.php?story=20091208050655947
2. http://rentzsch.tumblr.com/post/267379307/disable-and-recover-from-mac-os-xs-quarantine

Hope it helps. Good luck to anyone who's stuck at this.

UPDATED on 22 Feb:
According to @rellimjd , it seems that macOS 10.12.4 Beta 3 have fixed this?
Caz I haven't upgraded to this Beta 3 yet, I'm not sure if it did fix.

In case you need it to reverse the command above, use the following code mentioned by @KALLT

defaults delete com.apple.LaunchServices LSQuarantine

 

[Grothesk]

wow!! thank u so much!! this was driving me insane and you fixed it! yay! thx

 

[KALLT]

Be aware that this effectively disables Gatekeeper and XProtect.

 

[WalterZheng]

Be aware that this effectively disables Gatekeeper and XProtect.

Yeah it really did. Your rock!
However, if one suffers more from the verifying dialog than the risks it brings up when it is turned off, he will take it.

 

[KALLT]

Yeah it really did. Your rock!
However, if one suffers more from the verifying dialog than the risks it brings up when it is turned off, he will take it.

Until you forget to turn it back on after the beta ends. My advice: don’t use betas if you can’t handle its bugs.

 

[WalterZheng]

Until you forget to turn it back on after the beta ends. My advice: don’t use betas if you can’t handle its bugs.

Yeah.
And actually I'm a non-developer user. Story begins with the desire to try the new Nightshift feature, and just to find that this new beta give me a lesson with that annoying verifying dialog problem. Dont wanna roll back to 10.12.3, and so I got to switch to turn it off.

Thanks!

 

[rellimjd]

Yeah.
And actually I'm a non-developer user. Story begins with the desire to try the new Nightshift feature, and just to find that this new beta give me a lesson with that annoying verifying dialog problem. Dont wanna roll back to 10.12.3, and so I got to switch to turn it off.

Thanks!

Thank you for your help. Beta 3 is supposed to have fixed the issue. Now could you please help me reverse this? thank you for any help you could offer.

 

[KALLT]

Thank you for your help. Beta 3 is supposed to have fixed the issue. Now could you please help me reverse this? thank you for any help you could offer.

If you used the command above, then use this:

defaults delete com.apple.LaunchServices LSQuarantine

 

[rellimjd]

thank you.

 

[KALLT]

If you used the command above, then use this:

defaults delete com.apple.LaunchServices LSQuarantine

Files you downloaded while this was turned off won’t be quarantined, so be aware of this.