Apple Notarisation: Current Mac software installation software may not run smoothly on macOS Catalina
Apple's new "notarisation" security requirements for macOS Catalina may mean that installers you have for the software prior to 2019 will not run if you double-click them. in the Finder. Many installers that are available online that are not updated do not run in macOS Catalina.
Those of us who have made installers of all kinds – including Final Cut plugins – should prepare for extra work before macOS Catalina is released this fall.  In order for installers to run normally, they must be "notarized" by Apple.
This process includes using Xcode or a terminal command to submit your application to Apple. When an automated process approves your application (which currently takes less than 30 minutes), it will be listed. This means that when a user double-clicks on it (or a browser tries to launch it), the Mac will go to the Internet to see if it has been notarized. If it gets notarized, it will run. If not, it won't. If there is no Internet connection ̵
So that notarized applications can be run on offline Macs, there is an additional process known as "stapling" & # 39; which attaches the notation ticket to the application itself. If the installer has been "stapled", it will run normally on non-Internet connected Macs.
I used the Plugin Manager (from Digital Rebellions Pro Maintenance Tools) to create the many installers for my free Final Cut plugins. Part of the process was signing the installers with my Apple Developer ID. These installers from many years ago will not work fine with macOS Catalina.
I was watching a long presentation on the notary of Tom Bridge who has written on his blog:
I found a package that was properly signed that delivers Motion and Final Cut Pro templates that also triggered the quarantine alert. They were signed for distribution but not notarized. They still flag the quarantine check because they distributed files.
Developers can see this as an opportunity to review old installers. I hope Digital Rebellion can help me with my NLE plugins. I may also need to create a whole host of new installers that I can notify using other tools.
It's time for macOS developers to do the research to make sure their applications run easily in macOS Catalina and newer.
See Tom's presentation (aimed at Mac administrators who are happy to build applications using Xcode) from 33:22 to learn more about the notarization process:
If you don't does something, users users -2019 installers will see this (from Tom's blog):
How to run unlisted applications in Catalina
There are many useful Mac software installers on the Internet who remain safe to use, but whose developers have moved on – which is very unlikely to go through the notarization process.  Apple has said that users will always be able to run any software they like on their Macs. Their security policies over the last few years have been about making unlabeled applications less straightforward – to protect naive users from malicious software.
In the Finder, use the File: Open command (or control-click your icon to see a context menu that includes the Open command) to get a dialog asking if you is sure you want to open it – which includes a & # 39; Open & # 39; button that you can click on. This is what the dialog box looked like in 2013:
Click "Open" and the unannounced application will always run on your Mac. For each new Mac you move the installer to, you must go through the same process.