• Tor needs your system clock (and your time zone) set to the correct time.

  • The following firewall software have been known to interfere with Tor and may need to be temporarily disabled:

    • Webroot SecureAnywhere
    • Kaspersky Internet Security 2012
    • Sophos Antivirus for Mac
    • Microsoft Security Essentials
  • Videos that require Adobe Flash are unavailable. Flash is disabled for security reasons.

  • Tor can not use a bridge if a proxy is set.

  • The Tor Browser package is dated January 1, 2000 00:00:00 UTC. This is to ensure that each software build is exactly reproducible.

  • To run Tor Browser on Ubuntu, users need to execute a shell script. Open "Files" (Unity's explorer), open Preferences → Behavior Tab → Set "Run executable text files when they are opened" to "Ask every time", then click OK.

  • Tor Browser can also be started from the command line by running the following command from inside the Tor Browser directory:

    ./start-tor-browser.desktop

  • BitTorrent in specific is not anonymous over Tor.