Hey there, let's work through this Tor Browser launch problem together. You've already tried the basics like setting executable permissions and re-downloading, so let's dig into more targeted fixes:

• Launch from the terminal to get error logs
  The biggest clue here is usually the error output you can only see in the terminal. Open a terminal, navigate to your Tor Browser directory, and run the start command directly:

  cd /home/tor-browser_en-US && ./start-tor-browser
  

  Note down any error messages that pop up—this will tell you exactly what's blocking the launch (like missing dependencies, permission issues, or corrupted configs).

• Install missing system dependencies
  Tor Browser relies on several core system libraries that might not be installed on your machine. For Debian/Ubuntu-based systems, run:

  sudo apt install libgtk-3-0 libdbus-glib-1-2 libxt6 libstdc++6
  

  For Fedora/RHEL-based systems, use:

  sudo dnf install gtk3 dbus-glib libXt libstdc++
  

  These packages cover the most common missing dependencies that break Tor Browser launches.

• Never run Tor Browser with sudo
  Tor is designed to run as a regular user, and using root privileges can cause permission conflicts or security issues. Make sure you're executing the start command without sudo—even if you tried chmod with sudo, launch it as your normal user account.

• Reset Tor Browser's configuration directory
  Corrupted configuration files can prevent the browser from starting. Let's back up the old config and start fresh:

  mv ~/.tor-browser ~/.tor-browser-backup
  

  Now try launching Tor Browser again—it will create a new, clean configuration directory.

• Check for SELinux/AppArmor restrictions
  Security modules like SELinux or AppArmor might be blocking Tor Browser from running correctly.

  • For SELinux, you can temporarily disable it to test (don't leave it disabled long-term):

    sudo setenforce 0
    

    If the browser launches, you'll need to add a custom SELinux policy to allow it.
  • For AppArmor, check if there's a profile restricting Tor:

    sudo aa-status
    

    If you see a Tor-related profile, you can temporarily disable it with sudo aa-disable /etc/apparmor.d/usr.bin.tor-browser to test.

• Try using your distro's official Tor Browser package
  Instead of manually downloading the bundle, many Linux distributions offer a torbrowser-launcher package that handles downloads, updates, and dependency management automatically. For Debian/Ubuntu:

  sudo apt install torbrowser-launcher
  

  This often avoids the manual setup issues you're facing.

内容的提问来源于stack exchange，提问作者user791282