This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Content encoding error

  • 2 replies
  • 25 have this problem
  • 7 views
  • Last reply by FredMcD

more options

At random times every single website I attempt to view greets me with the "Content Encoding Error" message. It is getting extremely frustrating. I have cleared my cache. Cleared my cookies. Even tried modifying the encoding string in the config. All did nothing. This is driving me insane. 1 seconds it will work the next nothing works. Any help will be greatly appreciated.

At random times every single website I attempt to view greets me with the "Content Encoding Error" message. It is getting extremely frustrating. I have cleared my cache. Cleared my cookies. Even tried modifying the encoding string in the config. All did nothing. This is driving me insane. 1 seconds it will work the next nothing works. Any help will be greatly appreciated.

All Replies (2)

more options

What Firefox version are you using as your System Details list doesn't show a user agent?

You can check the value of the network.http.accept-encoding pref on the about:config page.

You can check for problems with preferences.

Delete possible user.js and numbered prefs-##.js files and rename (or delete) the prefs.js file to reset all prefs to the default value including prefs set via user.js and prefs that are no longer supported in the current Firefox release.

more options

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Open the Add-ons Manager <Control><Shift> A and disable All of them.