<ul><li>macOS error -609 occurs when launching an app from the App Store and indicates a problem with communication with the App Store to get decryption certificates for the binary.</li><li>Possible solutions include reinstalling the application, repairing disk permissions using Disk Utility, updating macOS to the latest version, logging out and back into the App Store account, reinstalling macOS through the EFI, disabling conflicting security software, removing network obstacles like firewalls, and freeing up disk space.</li><li>This issue has been previously experienced with launching test versions of Mac App Store apps and there have been other related problems like resolving trusted execution issues, limitations on macOS virtual machines, malfunctioning AppleScript in macOS 12.5 Beta 5, broken renewal of MAS receipts, and 'damaged' apps that can't be opened.</li></ul>

Error -609 Launching App From the Mac App Store

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