I tried everything but still get "De pagina die u wilt bekijken kan niet worden weergegeven, omdat deze gebruikmaakt van een ongeldige of niet-ondersteunde vorm van compressie" in Firefox, not IE (windows 7 64) What to do?

Question

I still get, even after uninstalling the virusscanner, deleting cache and firewall reset the message:"The page you want to visit cannot be diplayed....Invalid or Unsupported form of compression".
In IE the site works fine.

Answer 1

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
*Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
*Tools > Options > Privacy > Cookies: "Show Cookies"
You can try to disable the compression by temporarily setting the <b>network.http.accept-encoding</b> pref to an empty string on the <b>about:config</b> page.<br />
You can reset the pref to the default to restore its previous gzip,deflate value.
To open the <i>about:config</i> page, type <b>about:config</b> in the location (address) bar and press the "<i>Enter</i>" key, just like you type the url of a website to open a website.<br />
If you see a warning then you can confirm that you want to access the about:config page.<br />
*Use the Filter bar at the top of the about:config page to locate a preference more easily.
*Preferences that have been modified show as bold (user set).
*Preferences can be reset to the default via the right-click context menu if they are user set
*Preferences can be changed via the right-click context menu: Modify (String or Integer) or Toggle (Boolean) or by double-clicking the line with the pref
*http://kb.mozillazine.org/about:config