Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

Learn More

How to Get rid of "Firefox closed unexpectedly while starting" error window

  • 2 réponses
  • 0 a ce problème
  • 1 vue
  • Dernière réponse par Mike Kaply

Roko C.B.
Roko C.B.
more options

Unattended software (kiosk) here.

Sometimes (so rarely that I cannot reproduce in dev) the client sees this error screen: "Firefox closed unexpectedly while starting..." (see image in attachment)

Sometimes when rebooting the error goes away and Firefox starts normally.

Sometimes even when rebooting the system - this vertical error screen appears, and one solution is to reinstall Firefox, but I'd like not to (if not necessary) or at least programmatically detect the issue and perform the needed actions.

QUESTIONS: How to programmatically detect (bash i.e.) that this error window is present and get rid of it properly? Or, how to (for debugging) force that screen to appear (to force that broken state)?

PS: I'm running Firefox using:

nohup firefox -P ff_custom_profile -new-instance -private-window -kiosk "$url" > /dev/null 2>&1 &

Thank you for any assistance or insight

Unattended software (kiosk) here. Sometimes (so rarely that I cannot reproduce in dev) the client sees this error screen: "'''Firefox closed unexpectedly while starting'''..." (see image in attachment) Sometimes when rebooting the error goes away and Firefox starts normally. Sometimes even when rebooting the system - this vertical error screen appears, and one solution is to '''reinstall Firefox''', but I'd like not to (if not necessary) or at least programmatically detect the issue and perform the needed actions. QUESTIONS: How to programmatically detect (bash i.e.) that this error window is present and get rid of it properly? Or, how to (for debugging) force that screen to appear (to force that broken state)? PS: I'm running Firefox using: nohup firefox -P ff_custom_profile -new-instance -private-window -kiosk "$url" > /dev/null 2>&1 & Thank you for any assistance or insight
Captures d’écran jointes

Toutes les réponses (2)

Roko C.B.
Roko C.B. Auteur de la question
more options

Quick fix: this added bash line seems to help when the monitor script (cron jobbed) detects that firefox is not running and tries to restart it:

Try to kill any running firefox or mozilla crash reporters, then do:

rm -f ~/.mozilla/firefox/*.default/{.parentlock,lock}

and then start again Firefox (with custom profile).

Modifié le par Roko C.B.

Cela vous a-t-il été utile ?

Mike Kaply
Mike Kaply
  • Moderator
more options

I would open a bugzilla bug for this so that someone could help you track down why Firefox is crashing at startup

Cela vous a-t-il été utile ?

Poser une question

Vous devez vous identifier avec votre compte pour répondre aux messages. Veuillez poser une nouvelle question, si vous n’avez pas encore de compte.