Problem with Installer being quarantined on MacOS

Mike Matthews - Omnis omnis at
Mon Mar 14 17:02:10 UTC 2022

Hello David,

We do the notarising with Monterey just fine.  But, we don’t make a ZIP file, we send Apple a DMG file.  Then we staple the notarised Omnis application, and shove that inside a DMG file.

The use just has to dry the Omnis app on to the Application shortcut.

We put everything we need inside the FirstRunInstall folder, and the users just run, or upgrade from an earlier installed version.

So in summary, we don’t use an installer, just a DMG file.

Mike Matthews

Lineal Software Solutions
Commercial House, The Strand<x-apple-data-detectors://1/1> Barnstaple, Devon, EX31 1EU<x-apple-data-detectors://1/1>

omnis at<mailto:mike.matthews at><><>

On 9 Mar 2022, at 06:51, David Blaymires <davidb at<mailto:davidb at>> wrote:


Late in 2021 two things occurred - Apple changed their requirements in the Apple Developer program (we had to accept new terms and conditions) and we had to create new developer certificates for the notarizing process.  We build our application integrating our xcomps into the bundle, customising the logo, name, building the contents of the First Run folder etc and build a ZIP file that is then uploaded to Apple for notarizing.

Once we receive the successful notarizing notification back, we then use Install Builder to build our application installer which is downloaded automatically by existing copies of JobBag and run without any problem.  However when the resulting installer is downloaded from a website, the checks that Apple is doing as part of the download process is resulting in the installer being quarantined, and the only way to release it is to run the terminal command.  Frustrating.

Has anyone else come across this problem and been able to solve it?  I’m sure we are missing something very simple but it is so blindingly obvious we can’t see it.


David Blaymires
CEO : Instinct Systems : JobBag

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