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Why won't Facebook load?

  • 2 replies
  • 33 have this problem
  • Last reply by cor-el

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I keep getting this message:

Content Encoding Error

The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression.

   Please contact the website owners to inform them of this problem.

I will then press reload a few times and Facebook or the videos work. Some videos on Facebook won't start or work after a certain period of time.

I have Flash player updated as of yesterday. I don't know if I have to do anything else with Java and the other unsupported stuff. I don't know if I have to install any add-ons with Firefox?

I have recently installed some add-ons to have more safe and secure browsing. Do I need to list them?

Thank you.

All Replies (2)

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Many site issues can be caused by corrupt cookies or cache.

  • Clear the Cache and
  • Remove Cookies
    Warning ! ! This will log you out of sites you're logged in to.

Type about:preferences<Enter> in the address bar.

  • Cookies; Select Privacy. Under History, select Firefox will Use Custom Settings. Press the button on the right side called Show Cookies. Use the search bar to look for the site. Note; There may be more than one entry. Remove All of them.
  • Cache; Select Advanced > Network. Across from Cached Web Content, Press Clear Now.

If there is still a problem, Start Firefox in Safe Mode {web link} A small dialog should appear. Click Start In Safe Mode (not Refresh). While you are in safe mode;

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.

Poke around safe websites. Are there any problems?

Then restart.

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Firefox 44+ accepts a new kind of encoding (compression) called Brotli (br) for secure connections. Facebook has enabled Brotli (br) encoding for files send via a secure connection. Some (security) software that intercepts a secure connection to scan the content doesn't know about this encoding and changes the content-type header to text/plain. A possible workaround is to modify the involved pref and remove the trailing ", br" to prevent the server from sending files with Brotli compression.

  • = "gzip, deflate, br" => "gzip, deflate" (without quotes)

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.