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

How do I go back to version 4 fron version 5. 5 does not work with PayPal. This is a disaster.

  • 2 balasan
  • 3 ada masalah ini
  • 12 paparan
  • Balasan terakhir oleh the-edmeister

more options

Since I am using version 5, paypal des not work properly. I get this:

Bad Request

Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

Cookie: KHcl0EuY7AKSMgfvHl7J5E7hPtK=lTLBANn8r1h7BSfw_hmcUfSUhUBpncNwrlzPRZzRmJH-wUB1ohe7hvrSguMPhB4N2C4ls1HCpQqfvn2D; cookie_ch

Since I am using version 5, paypal des not work properly. I get this: Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. Cookie: KHcl0EuY7AKSMgfvHl7J5E7hPtK=lTLBANn8r1h7BSfw_hmcUfSUhUBpncNwrlzPRZzRmJH-wUB1ohe7hvrSguMPhB4N2C4ls1HCpQqfvn2D; cookie_ch

All Replies (2)

more options

For those that really need an earlier version of Firefox, find your system and the Firefox version you want in releases, download and start the install.

When reinstalling Firefox from a download, Firefox must be down once the installation starts. When the installation finishes, don't let the install start firefox for you. Instead end the install and start Firefox in your normal manner, thus preventing creating a new profile which does not have your bookmarks cookies, etc (but your old profile would still be around and would).

more options

Try clearing your Cookies for the affected websites.
Tools > Options -> Privacy - Cookies = Show Cookies button
Enter the domain in the Search bar at the top and all the Cookies for that URL will appear.

Hold the {Ctrl} key while you click on each Cookie in the small window. When that list is all highlighted, click the Remove Cookie button in the lower left. When you are done click Close.

Or you can right-click the page, choose View Page Info > Security > "View Cookies" and delete them there, for each different website as you get to it.