Can't connect under Win 11, previously worked

Summary

I used OpenConnect VPN GUI with my universitys VPN for quite a while on Win 10. After some months of not needing it, i switched to Win 11 and now it doesn't connect anymore, with the same credentials. 2024-11-20 08:47:31 | 35c8 | Got inappropriate HTTP CONNECT response: HTTP/1.1 401 Unauthorized I know the error seems to be about credentials, but i triple checked them. I'm using OpenConnect via Brew on my macbook air and thats working with same credentials from same network. I can't really troubleshoot, because i don't know if the error is Win 11 or a new version of OpenConnect VPN GUI. As i read logs i see that the connection is established over ipv6. That is the only thing that has changed recently, too, between me switching OSes, i think.

Version of the software & operating system

1.6.2-dirty

Steps to reproduce

Don't use the app for some time.
Install Win 11. Network now supports ipv6.
Connect with the newest version to a previously working VPN server.

Actual results

Log shows above error.

Expected results

Connection should be established.

Relevant logs and/or screenshots

2024-11-20 08:47:28 | 35c8 | POST https://vpn.uni-bremen.de/
2024-11-20 08:47:28 | 35c8 | Connected to [2001:638:708:1c::a1]:443
2024-11-20 08:47:28 | 35c8 | There was a non-CA certificate in the trusted list: OU=Copyright (c) 1997 Microsoft Corp.,OU=Microsoft Corporation,CN=Microsoft Root Authority.
2024-11-20 08:47:28 | 35c8 | There was a non-CA certificate in the trusted list: C=US,O=MSFT,CN=Microsoft Authenticode(tm) Root Authority.
2024-11-20 08:47:28 | 35c8 | There was a non-CA certificate in the trusted list: C=US,ST=California,L=Irvine,O=Blizzard Entertainment,OU=Battle.net,CN=Blizzard Battle.net Local Cert.
2024-11-20 08:47:28 | 35c8 | There was a non-CA certificate in the trusted list: CN=Root Agency.
2024-11-20 08:47:28 | 35c8 | SSL negotiation with vpn.uni-bremen.de
2024-11-20 08:47:28 | 35c8 | Connected to HTTPS on vpn.uni-bremen.de with ciphersuite (TLS1.3)-(ECDHE-SECP256R1)-(RSA-PSS-RSAE-SHA256)-(AES-128-GCM)
2024-11-20 08:47:28 | 35c8 | Got HTTP response: HTTP/1.0 302 Temporary moved
2024-11-20 08:47:28 | 35c8 | POST https://vpn4.uni-bremen.de/
2024-11-20 08:47:28 | 35c8 | Connected to [2001:638:708:1c::a5]:443
2024-11-20 08:47:28 | 35c8 | SSL negotiation with vpn4.uni-bremen.de
2024-11-20 08:47:28 | 35c8 | Connected to HTTPS on vpn4.uni-bremen.de with ciphersuite (TLS1.3)-(ECDHE-SECP256R1)-(RSA-PSS-RSAE-SHA256)-(AES-128-GCM)
2024-11-20 08:47:28 | 35c8 | XML POST enabled
2024-11-20 08:47:30 | 35c8 | Saving group: Tunnel-All-Traffic
2024-11-20 08:47:30 | 35c8 | POST https://vpn4.uni-bremen.de/
2024-11-20 08:47:30 | 35c8 | XML POST enabled
2024-11-20 08:47:30 | 35c8 | Select form: group_list
2024-11-20 08:47:30 | 35c8 | Text form: username
2024-11-20 08:47:30 | 35c8 | Password form: password
2024-11-20 08:47:30 | 35c8 | POST https://vpn4.uni-bremen.de/
2024-11-20 08:47:31 | 35c8 | Got inappropriate HTTP CONNECT response: HTTP/1.1 401 Unauthorized
2024-11-20 08:47:31 | 35c8 | Error establishing the CSTP channel
2024-11-20 08:47:31 | 1684 | Disconnected