Driver Error: Tun & Tap System

I am using Watchguard Firebox Mobile VPN with SSL, version 12.0 on an Apple Macbook Pro with macOS 10.14. When I open Firebox, there is a popup that says "Drive Error: The tun & tap system extensions may not be properly installed" and has the options to Continue or Quit. If I continue, the program works fine to my untrained eye. Is this something I need to address, and if so, how?

Note: I am not trained in IT, but I'm generally knowledgeable with technology. I am not the system administrator for my company's Firebox subscription.


  • james.carsonjames.carson Moderator, WatchGuard Representative

    I'd suggest starting with the latest version of the VPN client for your Mac:
    (Mobile VPN with SSL v12.5.3 for MacOS)

    v12.0 is very old, so I would suggest upgrading the firewall to the latest version of Fireware at some point to get the latest security patches, and fixes.

    -James Carson
    WatchGuard Customer Support

  • Not so. I have the same issue with this latest SSLVPN for MAC. 12.5.3
    MAC OS 10.15.6

    Uninstalled, re installed same dismal error message.

    What now brown cow??

  • Ok...12.5.3 is error prone, in other words, JUNK. Unusable.
    Went back to 12.5.2. Seems fine.

    So the answer is: stay away from 12.5.3 forever.

  • james.carsonjames.carson Moderator, WatchGuard Representative

    Hi @HSHSupport

    If you're still running into that error, I'd suggest opening a case with our support team. It's difficult to tell what might be interfering with the TAP driver based on that error message alone.

    -James Carson
    WatchGuard Customer Support

  • I know on my Windows 10 systems, the only way the TAP driver installs properly is if I run the SSLVPN installer as administrator. Maybe Macs have an equivalent requirement?

    Gregg Hill

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