LANCOM Support Knowledgebase
Document No. 1811.0911.1823.RHOO - V1.30
Troubleshooting guide: Unable to connect with the Advanced VPN Client on macOS HighSierra and/or Mojave
The Advanced VPN Client may not work properly after installation under macOS10.13 HighSierra and 10.14 Mojave.
This document contains
information for troubleshooting.
macOS Security Center
the installation of a filter driver for the Advanced VPN Client
to be allowed.
Under certain circumstances the
button that allows the installation is grayed out
. The Advanced VPN Client will then not work properly.
1) Please ensure that...
of the Advanced VPN Client
is not performed by remote maintenance
(e.g. via TeamViewer),
no mouse-gesture programs
are used during the installation, and
Chrome browser is not active
during the installation.
2) If the Advanced VPN Client still does not install correctly, you need to
temporarily disable the Security Center in macOS
Dock -> Applications -> Utilities -> Terminal
enter the command
sudo spctl --master-disable
and confirm the entry with the
the command by
entering your system password
Following a successful installation
of the Advanced VPN Client, you can
reactivate the Security Center by entering the command sudo spctl --master-enable
Catchwords: AVC; Advanced VPN Client; macOS
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