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

Zoeken in Support

Vermijd ondersteuningsscams. We zullen u nooit vragen een telefoonnummer te bellen, er een sms naar te sturen of persoonlijke gegevens te delen. Meld verdachte activiteit met de optie ‘Misbruik melden’.

Learn More

Deze conversatie is gearchiveerd. Stel een nieuwe vraag als u hulp nodig hebt.

Why does Firefox not load my site?

  • 7 antwoorden
  • 1 heeft dit probleem
  • 2 weergaven
  • Laatste antwoord van ASokolow

ASokolow
ASokolow
more options

I am a product manager at a popular and trusted national news site. Multiple users have written in to us saying that only our site does not load for them, saying "looks like you're offline" even when they're not. Why is this? It loads on ever other browser. We're thinking it might be caused by a browser extension, but have been unable to recreate the issue. Thoughts?

I am a product manager at a popular and trusted national news site. Multiple users have written in to us saying that only our site does not load for them, saying "looks like you're offline" even when they're not. Why is this? It loads on ever other browser. We're thinking it might be caused by a browser extension, but have been unable to recreate the issue. Thoughts?

Alle antwoorden (7)

FredMcD
FredMcD
more options

Please provide a public link (no password) that we can check out. No Personal Information Please !

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
more options

These are some of the things we tell users could cause problems, so you could try turning them ON to see whether they have any drastic effect:

  • Popular content blocking extensions such as
    • Adblock Plus
    • uBlock Origin
    • Privacy Badger
    • Ghostery
    • Disconnect
    • Blur
  • Cookies and/or local (DOM) storage blocked
  • Forced HTTPS if you have an HTTP site
ASokolow
ASokolow Vraageigenaar
more options

Thanks for the reply! We thought it could be caused by an ad blocker. After trying toggling all these settings, we still couldn't recreate the issue. We'll tell users the above, but any other suggestions are welcome!

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Is that offline message coming from the website or is this a local message that is caused by some script not being able to access the server?

Current Firefox releases (63+) have a more 'advanced' content blocking feature.

ASokolow
ASokolow Vraageigenaar
more options

The offline message is coming from our site. Even when I downloaded the latest version of Firefox and a bunch of ad blockers, I still couldn't recreate this issue.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Do you know what can trigger this line message?

If the server relies on JavaScript sending some data locally via XHR and the server doesn't receive this data then it is likely that some content blocking extension is actively blocking some essential data. That is always the risk when users have such extensions installed and all extensions have their own blocking lists and rules. You would have to contact affected users and check what content blocking extensions they have.

ASokolow
ASokolow Vraageigenaar
more options

Yup, I guess the assumption then as we figured was that it was a rogue browser extension. We just have to find out which one...