Installation package: torbrowser-install-3.6.5_en-US.exe (v3.6.5) I'm trying to start Two Tor Bundle browsers on the same system to have different sessions and split a persons (not to mixup them, but to have a possibility to browse internet at the same time). I had two copies of Tor Browser Bundle Installed. For example, the first one is installed to (1): X:\Tor Browser\ The second one is installed to (2): X:\Tor Browser 2ND\ (1) - default settings, nothing is changed. I.e. we will have: SocksPort - 9150, ControlPort - 9151, FlashPort - 9000 (2) - immediately after fresh installation, without starting anything, I had edited following files (see "->" symbol): [.\Data\Tor\torrc-defaults] SocksPort 9150 -> 9250 ControlPort 9151 -> 9251 ClientTransportPlugin flashproxy exec Tor\PluggableTransports\flashproxy-client --register :0 :9000 -> :9100 [.\Data\Browser\profile.default\preferences\extension-overrides.js] pref("extensions.torbutton.socks_port", 9150 -> 9250); So, it seems like second Tor Browser Bundle must use only following ports: 9250, 9251 and 9100? But... NO! What I'm doing? 1. Starting (1) Tor Browser Bundle. It starts perfect and all is working perfect (default settings, default ports). Working in it - all is fine. 2. Now, without closing the (1) we are trying to start (2) Tor Browser Bundle. (All actions are controlled by firewall-process/HIPS to see any actions on the machine. And what I will see? I'm getting a request to my firewall, that process X:\Tor Browser 2ND\Browser\firefox.exe is trying to create socket on 127.0.0.1:9250 OK, it is what we expect. But when GUI is starting it is trying to create socket on... 127.0.0.1:9151 (Default ControlPort) instead of 127.0.0.1:9251 (ControlPort). WTF?! If you will block this try to use this port, you will get a error message: ======================== Tor Launcher Could not connect to Tor control port. [OK] ======================== and Tor Browser will not be started. So, Tor Launcher of (2) using/trying to use 9151 port instead of configured 9251! **Trac**: **Username**: VasiliyPetrov