Firefox and Librewolf take about 30 seconds to start

Both Firefox and LibreWolf take about 30 seconds to start. I got the error message:

Firefox is already running, but is not responding. To use Firefox, you must first close the existing Firefox process, restart your device, or use a different profile.

I tried several solutions such as:

  • restarting my computer
  • clearing cache
  • creating a new Firefox profile
  • uninstalling both Firefox and LibreWolf
  • installing them as a flatpak
  • Launching them in safe mode
  • Removing the “profile lock” file
  • Not using my VPN (Mullvad VPN)
  • launching the app with split tunneling

I have not had this problem when using Brave browser. Iv had this issue for a while now and am out of ideas for how to fix it.

Which DE/WM? Is xdg-desktop-portal-gnome installed?

1 Like

I am using XFCE. I don’t have this problem on my laptop running i3. I just checked xdg-desktop-portal-gnome is installed.

Uninstall it, it is causing problems.

This fixed the issue. Thank you so much!

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