This guide explains how to install the Acronis Agent on macOS for Swiss Backup even if the Gatekeeper application attempts to block the installation and causes an error “install.pkg cannot be opened because Apple cannot verify that it does not contain malicious software.”

Allow Acronis in Gatekeeper

To do this:

1. Open the Acronis file install.pkg so that the error appears.
2. Go to System Preferences (in the Apple menu).
3. Select Security & Privacy then the General tab if necessary.
4. A text appears regarding install.pkg, click on Open Anyway.
5. Confirm your decision to open the file by clicking the appropriate button.