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Since the 4.0 update qBittorrent has displayed this icon and message (when hovering over):

icon message

However, I haven't noticed issues with downloading. "Offline" of course implies that the client shouldn't be able to connect at all.

UPDATE: I was using a SOCKS5 proxy at the time and at least DHT likely didn't work.

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  • I don't use qBittorrent, but I assume this is an issue with the update. In that case, you should report it to the upstream developers so they are aware and can fix it.
    – jpaugh
    Feb 1, 2018 at 21:11

3 Answers 3

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The problem is exactly what the status tells you: you do not have the port, which qBittorrent listens at - for incomming connections forwarded through you router to qBittorrent, or your firewall is blocking that port.

Success: I can see your service

qBittorrent basically tells you that you are downloading as passive. How to change that is explained for example here: https://www.youtube.com/watch?v=nhK9ib5F_vA Other option is that after the update your firewall blocked the incomming port. To make it permanent do (taken from http://www.tomshardware.co.uk/faq/id-3114787/open-firewall-ports-windows.html ):

  1. Navigate to Control Panel, System and Security and Windows Firewall.
  2. Select Advanced settings and highlight Inbound Rules in the left pane.
  3. Right click Inbound Rules and select New Rule.
  4. Add the port you need to open and click Next.
  5. Add the protocol (TCP or UDP) and the port number into the next window and click Next.
  6. Select Allow the connection in the next window and hit Next.
  7. Select the network type as you see fit and click Next.
  8. Name the rule something meaningful and click Finish.
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  • I've added both the "port used for incoming connections" and the port in "proxy server" (I have to use a proxy) from qBittorrent options as an inbound rule to Windows firewall, but the connection status is still offline.
    – user198350
    Feb 2, 2018 at 14:30
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For me it was something different.

After looking at the logs inside %LOCALAPPDATA%\qBittorrent\logs I saw the not very helpful error message:

Failed to listen on IP ... An attempt was made to access a socket in a way forbidden by its access permissions.

I tracked that problem to Hyper-V and WSL reserving too many ports. Look at this thread https://github.com/qbittorrent/qBittorrent/issues/13019

I assigned a different random port a few times until logs indicated Successfully listening on IP: ... Port: ..., paused and restarted all torrents.

Hope this helps someone.

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Another solution is to check the network adapter.

  1. Tools
  2. Options
  3. Advanced
  4. Network interface
  5. select the relevant option that has internet connectivity

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