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

Tried to access Gmail via Firefox - 404. That’s an error. The requested URL /intl/en-GB/mail/help/about.html was not found on this server. That’s all we know.

  • 2 replies
  • 23 have this problem
  • 1 view
  • Last reply by dyna1972

more options

Tried to access Gmail via Firefox. Got this message "404. That’s an error. The requested URL /intl/en-GB/mail/help/about.html was not found on this server. That’s all we know." i was able to access Gmail via Internet Explorer as well as my Android phone. Don;t know why I can't access it via Firefox as I prefer using the Firefox browser. Please help. Thanks.

Tried to access Gmail via Firefox. Got this message "404. That’s an error. The requested URL /intl/en-GB/mail/help/about.html was not found on this server. That’s all we know." i was able to access Gmail via Internet Explorer as well as my Android phone. Don;t know why I can't access it via Firefox as I prefer using the Firefox browser. Please help. Thanks.

Chosen solution

Clear the cache and remove cookies only from websites that cause problems.

"Clear the Cache":

  • Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"
Read this answer in context 👍 15

All Replies (2)

more options

Chosen Solution

Clear the cache and remove cookies only from websites that cause problems.

"Clear the Cache":

  • Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"
more options

Thanks so much. Don't know which site was causing the problem but I removed all cookies. Thanks again.