No connections can be made in qBittorrent but work with other applications

[Industry]

Bug report

Checklist

• I have read the issue reporting section in the contributing guidelines, so I know how to submit a good bug report with the required information
• I have verified that the issue is not fixed and is reproducible in the latest version
• (optional but recommended) I have verified that the issue is not fixed and is reproducible in the latest CI build
• I have checked the frequent/common issues list and searched the issue tracker for similar bug reports (including closed ones) to avoid posting a duplicate
• This report is not a support request or question, both of which are better suited for either the discussions section, forum, or subreddit. The wiki did not contain a suitable solution either
• I have pasted/attached the settings file and relevant log(s) in the Attachments section at the bottom of the report. Mandatory: the settings file and at least the most recent log. See this wiki page if you're not sure where to find them.

Description

qBittorrent info and operating system(s)

• qBittorrent version: 4.3.8
• Operating system(s) where the issue occurs: W10, latest updates

If on Linux, libtorrent-rasterbar and Qt versions

• Qt: (type here)
• libtorrent-rasterbar: (type here)

What is the problem

No connections can be made. (W) 2021-09-02T12:52:30 - Couldn't download IP geolocation database file. Reason: An unknown network-related error was detected

Detailed steps to reproduce the problem

1. Upon loading, no connections can be made regardless of public/private trackers
2. I have tried fresh installations of qBittorrent, opened all the ports, attempted binding to various adapters/IPs. Nothing works. Yet other bittorrent clients like uTorrent. work right out of the box, with default settings.

What is the expected behavior

For connections to occur

Extra info (if any)

Log file speaks about a geolocation error and then NAT turns off
Couldn't download IP geolocation database file. Reason: An unknown network-related error was detected
There seems to be similarity to issue 13318 but my computer's language settings are set to U.S. English (default, only language available)

Attachments

(N) 2021-09-02T13:18:53 - qBittorrent v4.3.8 started
(N) 2021-09-02T13:18:53 - Using config directory: C:/Users/mriva/AppData/Roaming/qBittorrent/
(I) 2021-09-02T13:18:53 - Trying to listen on: 192.168.0.33:29525
(N) 2021-09-02T13:18:53 - Peer ID: -qB4380-
(N) 2021-09-02T13:18:53 - HTTP User-Agent is 'qBittorrent/4.3.8'
(I) 2021-09-02T13:18:53 - DHT support [ON]
(I) 2021-09-02T13:18:53 - Local Peer Discovery support [ON]
(I) 2021-09-02T13:18:53 - PeX support [ON]
(I) 2021-09-02T13:18:53 - Anonymous mode [OFF]
(I) 2021-09-02T13:18:53 - Encryption support [ON]
(I) 2021-09-02T13:18:53 - UPnP / NAT-PMP support [ON]
(I) 2021-09-02T13:18:53 - IP geolocation database loaded. Type: DBIP-Country-Lite. Build time: Tue Aug 31 20:09:36 2021.
(N) 2021-09-02T13:18:53 - Options were saved successfully.
(W) 2021-09-02T13:18:53 - Couldn't download IP geolocation database file. Reason: An unknown network-related error was detected
(I) 2021-09-02T13:18:57 - UPnP / NAT-PMP support [OFF]

[ghost]

Try version 4.1.9.1. The latest versions have known networking issues. If it doesn’t work even with that version, try enabling “Use different ports on each startup” option and restart the client.

[ArcticGems]

Any security program that might be blocking it?

[Industry]

Not running any firewalls or what not. I disabled the one in Windows with the same result.
Tried downgrading--this seems to be a version before implementing "Validate HTTPS tracker certificates" as that option is missing in the settings. Same result.

Then borrowed a buddies VPN and everything started working in two seconds. Maybe it is a firewall/router configuration issue after all?

[ghost]

What error message do you see in the trackers tab?

[Industry]

"Not working". This is the same for public and private trackers, all of which start to work immediately after the VPN is enabled.

[Industry]

Not a firewall issue, because other applications are able to connect without any issues.

[FranciscoPombal]

Try version 4.1.9.1. The latest versions have known networking issues. If it doesn’t work even with that version, try enabling “Use different ports on each startup” option and restart the client.

Several 4.2.x releases (or all of them?) had such problems. I haven't observed such issues in 4.3.x releases, and I've seen a HUGE decrease in such reports since the 4.2.x days.

Also, please don't recommend using older versions. They have other known problems and reports filed against them are useless to contributors. Users should always use the latest version (unless it really has some catastrophic bug, but in that case a hotfix is generally released quickly anyway), report bugs to the best of their ability, and, if they have the ability and willingness to do so, help in fixing those bugs.

[FranciscoPombal]

Then borrowed a buddies VPN and everything started working in two seconds. Maybe it is a firewall/router configuration issue after all?

Sounds like a network misconfiguration on your end then, either on your system or qBittorrent settings. In the latter case, try uninstalling, removing the settings completely (https://github.com/qbittorrent/qBittorrent/wiki/Frequently-Asked-Questions#Where_does_qBittorrent_save_its_settings, backup your .fastresumes to keep the torrents) and installing again.

Anyway, moving to discussions as this is more of a support thread than a bug report.