Apple does not allow FDA permissions to be granted programmatically by the installer for security reasons. The Solution: IT administrators must use Mobile Device Management (MDM) solutions (like Jamf or Intune) to push a "Privacy Preferences Policy Control" (PPPC) payload. The Reality: If an admin misses this configuration, the user installs the client, hits "connect," and nothing happens—or the client crashes silently. This is the single most common support ticket for E90 macOS deployments.

For macOS, this distinction is vital. The E90 client is not just a VPN; it is a .

E90 is a conceptual framework for advanced endpoint VPN clients; specific products from vendors like Tailscale (with Funnel), WireGuard-based posture agents, or NetMotion (Zscaler) implement similar principles. Always audit compatibility with your macOS version and MDM.