Getting Cookie is not acceptable when using default command

[OctoNezd]

I can't login using default vpn config

Getting this:

openconnect 127.0.0.1 
POST https://127.0.0.1/
Connected to 127.0.0.1:443
SSL negotiation with 127.0.0.1
Server certificate verify failed: signer not found

Certificate from VPN server "127.0.0.1" failed verification.
Reason: signer not found
To trust this server in future, perhaps add this to your command line:
    --servercert pin-sha256:LTaji7NgbIe1xbNc5njgJcQ3y5J0pTT4gM6fASQy51s=
Enter 'yes' to accept, 'no' to abort; anything else to view: yes
Connected to HTTPS on 127.0.0.1 with ciphersuite (TLS1.3)-(ECDHE-SECP256R1)-(RSA-PSS-RSAE-SHA256)-(AES-256-GCM)
XML POST enabled
Please enter your username.
Username:octo
POST https://127.0.0.1/auth
Please enter your password.
Password:
POST https://127.0.0.1/auth
Got inappropriate HTTP CONNECT response: HTTP/1.1 401 Cookie is not acceptable
Creating SSL connection failed
Cookie was rejected by server; exiting.

[aminvakil]

Yep, it's a known issue, my openconnect servers do not work as well.

https://gitlab.com/openconnect/openconnect/-/issues/659

[Alezzzander]

I don't know why.but i have servers with the same config, and one client that can connect to one server and can't connect to another with this error.... Im using the same image but working server uses ubuntu 22.04, second server - ubuntu 24.04