Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Getting an Error : Content Encoding Error . This Happens on my yahoo home page and many other Sites. Fix?

more options

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.

This is what the error message says. This is happening on Many of the sites I go to. Using windows 7 How do I fix this?

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. This is what the error message says. This is happening on Many of the sites I go to. Using windows 7 How do I fix this?

Chosen solution

By accident I found the problem. It was with a program that comes with Real Player called Speed Bit Accelerator. After shutting this off the problem went away (so far). I hope a future version of Firefox addresses this issue. I would really like to be able to use Speed Bit. For now though My problem is Solved.

Read this answer in context 👍 1

All Replies (3)

more options

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:


  1. Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
  2. Under "Time range to clear", select "Everything".
  3. Now, click the arrow next to Details to toggle the Details list active.
  4. From the details list, check Cache and Cookies and uncheck everything else.
  5. Now click the Clear now button.

Further information can be found in the Clear your cache, history and other personal information in Firefox article.

Did this fix your problems? Please report back to us!

more options

You can check the network.http.* prefs on the about:config page.
Reset all network.http prefs to the default value via the right-click context menu -> Reset if they are user set (bold).

Check at least:


Try to boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.

more options

Chosen Solution

By accident I found the problem. It was with a program that comes with Real Player called Speed Bit Accelerator. After shutting this off the problem went away (so far). I hope a future version of Firefox addresses this issue. I would really like to be able to use Speed Bit. For now though My problem is Solved.