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Gatekeeper, first introduced in OS X Mountain Lion, is a Mac security feature which prevents the user from launching potentially harmful applications. In macOS Sierra, however, Apple made some important changes to Gatekeeper that seemingly limit the choices of power users. But don’t worry, Gatekeeper can still be disabled in Sierra. Here’s how.
To resolute Gatekeeper issues on macOS Sierra and unlock images and programs ( annoying image/application is damaged messages pretending you cannot open things ).
The most common messages received from users on Appked are reports that the “app” is damaged and can’t be opened. You should move it to the Trash! Like this:
Disable Gatekeeper in macOS Sierra
The Gatekeeper settings can be found in System Preferences > Security & Privacy > General. The Gatekeeper options are located beneath “All apps downloaded from:” with the choice of “Anywhere” missing.
It a simple fix and here is how we fix it:
Open the Terminal app from the /Applications/Utilities/ folder and then enter the following command syntax:
sudo spctl --master-disable
Hit return and authenticate with an admin password
This will allow you to open and run apps from “Anywhere” outside the Mac App Store.
Now, relaunch System Preferences and head back to the Gatekeeper settings. You’ll now see that “Anywhere” has been restored. Click the padlock in the lower-left corner to enter your password and make changes, then select “Anywhere” from the list of Gatekeeper options. The security feature will no longer bug you about apps from unidentified developers.
To re-enable Gatekeeper simply run the following command in the Terminal app
sudo spctl --master-enable
Does not work properly. There is no way to install damaged App”
Please Run This Command In Terminal
sudo spctl --master-disableAnd Type Your Password. Done
ok, thanks a lot, you do a great job
I have done all of the above, however I still get ‘The installation failed. The installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.’ Any idea?
Thanks
If Special K Is Not Working Then Simply Do This:
Run This Command In Terminal
sudo spctl --master-disableAnd Type Your Password. Done
It has worked up until this latest High Sierra release, once the terminal command is entered I get this
Red:~ g$ sudo spctl –master-disable
Password:
System Policy Basic Usage:
spctl –assess [–type type] [-v] path … # assessment
spctl –add [–type type] [–path|–requirement|–anchor|–hash] spec … # add rule(s)
spctl [–enable|–disable|–remove] [–type type] [–path|–requirement|–anchor|–hash|–rule] spec # change rule(s)
spctl –status | –master-enable | –master-disable # system master switch
Kernel Extension User Consent Usage:
spctl kext-consent ** Modifications only available in Recovery OS **
status
Print whether kernel extension user consent is enabled or disabled.
enable
Enable requiring user consent for kernel extensions.
disable
Disable requiring user consent for kernel extensions.
add
Insert a new Team Identifier into the list allowed to load kernel extensions without user consent.
list
Print the list of Team Identifiers allowed to load without user consent.
remove
Remove a Team Identifier from the list allowed to load kernel extensions without user consent.
Red:~ g$
Please Type Command Manually. it Will Work
sudo spctl –master-disable
type manual on xterminal, its work.
Thanks
i installed the app but it gives me this error: Run-Time Exception Occurred. I did the command you suggested but still not working. Thanks for your help.
it was working fine when I started to use it. but suddenly gave me that error. Please Help!
What’s Error Giving Please Show Screenshot.
PS: Type Command Manually In Terminal. Thanks
sudo spctl –master-disable to enter password its has a key lock unable to enter pasword to proceed any ideas please
Please Type Your Admin Password To Unlock
Thank you Admin. I believe that if you directed people to press “return” after typing in “sudo spctl —master-disable” then they would have a pop up occur which says “password”. Unless you press “return” nothing happens in High Sierra.
Yes Password Is Must To Enable This Features
What terminal? Where can I find that to type in?
Goto Application>>Utilities>> Terminal
Or Simply Press COMMAND+SPACE To Open Search & Type Termnial
how can you undo the command
Simply Replace disable with enable
sudo spctl --master-enable