MASSO Link - macOS Instructions
How to install MASSO Link on a Mac. From v2.15 the app is signed, so macOS opens it without a security warning.
Applies to
MASSO Link v2.15 or later on macOS
Builds
Apple Silicon (M1–M5) or Intel
Download
Install
1
Download the
.dmg for your Mac: Apple Silicon for M1 to M5 chips, or Intel. To check, open the Apple menu and choose About This Mac.2
Double-click the
.dmg file to mount the disk image.
3
Drag the MASSO Link app to the Desktop or another folder.

WARNING
Copy the app out of the disk image before running it. Running it from the mounted image may make it fail.4
Right-click the mounted disk image and choose Eject. You can then delete the
.dmg file.
5
Double-click MASSO Link to start it.

Settings file
On first run, MASSO Link creates MASSO_Link.dat in the same folder as the app and shows a confirmation. It stores the machine name, MASSO IP address and window position, so keep it with the app.

MASSO Link v2.14 and earlier
Older versions are unsigned and Intel-only. We recommend updating to v2.15. If you need an older version, the first launch differs:
- On Apple Silicon, install Rosetta if macOS asks, then open the app again.
- macOS says the developer cannot be verified. Click Cancel.
- Open System Preferences → Security & Privacy (on newer macOS: System Settings → Privacy & Security).
- Next to the message that MASSO Link was blocked, click Open Anyway, then close the window.
- Double-click MASSO Link again and click OK. You only need to do this once.



