I've found a few others reporting this problem, but no resolution. When connecting to a pulse secure endpoint, authentication is successful (I can see the DSID cookie in the http traffic), but when openconnect tries to establish the VPN connection I get: Read 3 bytes of SSL record < 0000: 01 00 08 Server response to hostname packet is error 0x08 Creating SSL connection failed I initially tried 7.08 from the Ubuntu 18.04 repositories. When that didn't work I compiled from source so I have: openconnect --version OpenConnect version v7.08-125-g31b5c4a Using OpenSSL. Features present: TPM (OpenSSL ENGINE not present), HOTP software token, TOTP software token, DTLS, ESP Supported protocols: anyconnect (default), nc, gp I've tried configuring the host checker software and altering my os param, but always get the same error. Any help would be greatly appreciated.