Hi,
I have fresh installed Windows 10 1709 with Pulse Secure 5.1.60701.
I created the new connection (UAC or VPN) and if I click on it then it stuck on "Securing connection" and then Error 1205 "Failed to setup virtual adapter".
I uninstall and install but same error.
UPDATE: After driver reinstallation of "Juniper Networks Virtual Adapter" the connection was established.