How to fix damaged app message on macOS Sierra



To resolve Gatekeeper issues on macOS Sierra and unlock images and programs ( annoying image/application is damaged messages pretending you cannot open things ).


For that reason you might have to completely disable Gatekeeper checks, and to do that open your terminal and type:


sudo spctl --master-disable


Your mac password will be required.


For Mac OS X 10.11 or later read this



NMac Ked Team