After a clean installation of Fedora 43 KDE, I installed the packages for connecting to my university’s network via SSTP VPN, such as sstp-client, NetworkManager-sstp, and plasma-nm-sstp for better DE integration.
After setting up the VPN configuration, when I try to connect to it within NetworkManager, I get these unknown errors.
Then I tried to connect to the VPN within CLI and look for the logs:
cookraine@fedora:~$ nmcli connection up SSTP_VPN
Error: Connection activation failed: Unknown reason
Hint: use ‘journalctl -xe NM_CONNECTION=d84d9227-7c7b-4469-bee4-0d9750c2925e + NM_DEVICE=wlp2s0’ to get more details.Nov 08 13:18:17 fedora NetworkManager[1055]: [1762600697.4884] vpn[0x55fc76c89310,d84d9227-7c7b-4469-bee4-0d9750c2925e,“SSTP_VPN”]: starting sstp
Nov 08 13:18:17 fedora NetworkManager[1055]: [1762600697.8809] vpn[0x55fc76c89310,d84d9227-7c7b-4469-bee4-0d9750c2925e,“SSTP_VPN”]: dbus: failure: connect-failed (1)
Nov 08 13:18:29 fedora NetworkManager[1055]: [1762600709.1384] vpn[0x55fc76c89310,d84d9227-7c7b-4469-bee4-0d9750c2925e,“SSTP_VPN”]: starting sstp
Nov 08 13:18:29 fedora NetworkManager[1055]: [1762600709.7110] vpn[0x55fc76c89310,d84d9227-7c7b-4469-bee4-0d9750c2925e,“SSTP_VPN”]: dbus: failure: connect-failed (1)
Here are some system logs, if they help:
cookraine@fedora:~$ journalctl -f
Nov 08 13:42:17 fedora sstpc[42221]: Unrecoverable socket error, 1
Nov 08 13:42:17 fedora sstpc[42221]: HTTP handshake with server failed
Nov 08 13:42:17 fedora pppd[42217]: Modem hangup
Nov 08 13:42:17 fedora NetworkManager[42217]: Modem hangup
Nov 08 13:42:17 fedora NetworkManager[42217]: Connection terminated.
Nov 08 13:42:17 fedora pppd[42217]: Connection terminated.
Nov 08 13:42:17 fedora nm-sstp-service[42202]: handle_set_state
Nov 08 13:42:17 fedora NetworkManager[1055]: [1762602137.2856] vpn[0x55fc76c89310,d84d9227-7c7b-4469-bee4-0d9750c2925e,“SSTP_VPN”]: dbus: failure: connect-failed (1)
Nov 08 13:42:17 fedora pppd[42217]: Exit.
Nov 08 13:49:26 fedora NetworkManager[1055]: [1762602566.7272] agent-manager: agent[12f61e8befcffe5d,:1.446/nmcli-connect/1000]: agent registered
Nov 08 13:49:26 fedora NetworkManager[1055]: [1762602566.7454] vpn[0x55fc76c89310,d84d9227-7c7b-4469-bee4-0d9750c2925e,“SSTP_VPN”]: starting sstp
Nov 08 13:49:26 fedora NetworkManager[1055]: [1762602566.7456] audit: op=“connection-activate” uuid=“d84d9227-7c7b-4469-bee4-0d9750c2925e” name=“SSTP_VPN” pid=42898 uid=1000 result=“success”
Nov 08 13:49:26 fedora kded6[2576]: Unhandled VPN connection state change: NetworkManager::VpnConnection::NeedAuth
Nov 08 13:49:26 fedora maliit-keyboard[2448]: “Object does not exist at path “/org/freedesktop/NetworkManager/ActiveConnection/2””
Nov 08 13:49:26 fedora kded6[2576]: Unhandled VPN connection state change: NetworkManager::VpnConnection::Connecting
Nov 08 13:49:26 fedora maliit-keyboard[2448]: “Object does not exist at path “/org/freedesktop/NetworkManager/ActiveConnection/2””
Nov 08 13:49:26 fedora pppd[42923]: Plugin /usr/lib64/pppd/2.5.1/nm-sstp-pppd-plugin.so loaded.
Nov 08 13:49:26 fedora NetworkManager[42923]: Plugin /usr/lib64/pppd/2.5.1/nm-sstp-pppd-plugin.so loaded.
Nov 08 13:49:26 fedora pppd[42923]: pppd 2.5.1 started by root, uid 0
Nov 08 13:49:26 fedora nm-sstp-service[42913]: handle_set_state
Nov 08 13:49:26 fedora pppd[42923]: Using interface ppp0
Nov 08 13:49:26 fedora NetworkManager[42923]: Using interface ppp0
Nov 08 13:49:26 fedora NetworkManager[42923]: Connect: ppp0 ↔ /dev/pts/3
Nov 08 13:49:26 fedora pppd[42923]: Connect: ppp0 ↔ /dev/pts/3
Nov 08 13:49:26 fedora nm-sstp-service[42913]: handle_set_state
Nov 08 13:49:26 fedora NetworkManager[1055]: [1762602566.8239] manager: (ppp0): new Ppp device (/org/freedesktop/NetworkManager/Devices/31)
Nov 08 13:49:27 fedora sstpc[42927]: Unrecoverable socket error, 1
Nov 08 13:49:27 fedora sstpc[42927]: HTTP handshake with server failed
Nov 08 13:49:27 fedora pppd[42923]: Modem hangup
Nov 08 13:49:27 fedora NetworkManager[42923]: Modem hangup
Nov 08 13:49:27 fedora NetworkManager[42923]: Connection terminated.
Nov 08 13:49:27 fedora pppd[42923]: Connection terminated.
Nov 08 13:49:27 fedora nm-sstp-service[42913]: handle_set_state
Nov 08 13:49:27 fedora NetworkManager[1055]: [1762602567.5755] vpn[0x55fc76c89310,d84d9227-7c7b-4469-bee4-0d9750c2925e,“SSTP_VPN”]: dbus: failure: connect-failed (1)
Nov 08 13:49:27 fedora pppd[42923]: Exit.
It’s worth mentioning that connections to the VPN were successful in the past when I was still using Fedora 42, before I decided to do a fresh install of the latest distro. For the VPN configuration, I was using password authentication with the MSCHAPv2 protocol and without a CA certificate, since the VPN server doesn’t require it.
I’d really appreciate any help from anyone!