I've seen a few posts that discuss this error with PulseUI / Pulse Secure VPN, but all the ones I've found have solutions for either Windows or MacOS. I was wondering if someone could help me figure out how to get the PulseUI VPN working on Linux (specifically Ubuntu 20.04). Note that I don't experience this error with Windows.
References:
https://kb.pulsesecure.net/articles/Pulse_Secure_Article/KB41057
https://kb.pulsesecure.net/articles/Pulse_Secure_Article/KB43717
https://community.pulsesecure.net/t5/Pulse-Connect-Secure/Failed-to-setup-virtual-adapter-Error-1205...
https://community.pulsesecure.net/t5/Pulse-Desktop-Clients/Error-1205-Failed-to-setup-Virtual-Adapte...
Hello, I have the same problem as you on Ubuntu 20.04. I'm looking for a solution too.