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Strange new behavior connecting to just Facebook and You Tube.

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  • Last reply by cor-el

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Not sure what topic this falls under but...Sometime in the last couple weeks, Firefox doesn't want to connect to Facebook or You Tube. Just these 2 sites. All the other bookmarks and quick links on my home page work fine. If I clear my data and cookies and re-start FF it sometimes connects, sometimes doesn't, and sometimes opens FB in what looks like a safe mode screen (https?). Vexing me as to what the issue is. Updated FF, Windows, re-installed FF, refreshed it, and finally came here looking for a way to restore the default settings for FF. Since FB and YT are Alphabet companies, have they done something that's messing with FF?

Not sure what topic this falls under but...Sometime in the last couple weeks, Firefox doesn't want to connect to Facebook or You Tube. Just these 2 sites. All the other bookmarks and quick links on my home page work fine. If I clear my data and cookies and re-start FF it sometimes connects, sometimes doesn't, and sometimes opens FB in what looks like a safe mode screen (https?). Vexing me as to what the issue is. Updated FF, Windows, re-installed FF, refreshed it, and finally came here looking for a way to restore the default settings for FF. Since FB and YT are Alphabet companies, have they done something that's messing with FF?

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If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block content (Adblock Plus, NoScript, DuckDuckGo PE, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block content.

Firefox shows a purple shield instead of a gray shield at the left end of the location/address bar in case Enhanced Tracking Protection is blocking content.

  • click the shield icon for more detail and possibly disable the protection

You can check the Web Console for relevant-looking messages about blocked content.


You can try these steps in case of issues with webpages:

You can reload webpage(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • hold down the Shift key and left-click the Reload button
  • press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • press "Command + Shift + R" (Mac)

Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings).

"Remove the Cookies" for websites that cause problems:

  • Settings -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Settings -> Privacy & Security
    Cookies and Site Data -> Clear Data -> [X] Cached Web Content -> Clear

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window