Pulse Secure Article: KB44321 - "PulseSecure.pkg" can't be opened because Apple cannot check it for malicious software when installing Pulse Desktop Client installer (PKG file) on macOS 10.15.1 and above.
![Installing Pulse Client using Pulse Secure Application Launcher for the First-Time using Chrome (macOS) Installing Pulse Client using Pulse Secure Application Launcher for the First-Time using Chrome (macOS)](https://help.ivanti.com/ps/help/en_US/PDC/9.1R13/depg_psal/images/ps_app_launcher_server_function_options_macos.png)
Installing Pulse Client using Pulse Secure Application Launcher for the First-Time using Chrome (macOS)
![VPN for Mac | Network Connectivity | Services | Information Technology Services | Brandeis University VPN for Mac | Network Connectivity | Services | Information Technology Services | Brandeis University](https://www.brandeis.edu/its/_files/mac-pulse-allow.jpeg)
VPN for Mac | Network Connectivity | Services | Information Technology Services | Brandeis University
![Installing Pulse Client using Pulse Secure Application Launcher for the First-Time using Chrome (macOS) Installing Pulse Client using Pulse Secure Application Launcher for the First-Time using Chrome (macOS)](https://help.ivanti.com/ps/help/en_US/PDC/9.1R13/depg_psal/images/pulse_secure_app_launcher_install_successful_macos.png)
Installing Pulse Client using Pulse Secure Application Launcher for the First-Time using Chrome (macOS)
![Installing Pulse Client using Pulse Secure Application Launcher for the First-Time using Chrome (macOS) Installing Pulse Client using Pulse Secure Application Launcher for the First-Time using Chrome (macOS)](https://help.ivanti.com/ps/help/en_US/PDC/9.1R13/depg_psal/images/ps_app_launcher_installation_steps_macos.png)