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

Pages don't load or load slowly in Firefox 20 and 21

  • 5 replies
  • 9 have this problem
  • 3 views
  • Last reply by cor-el

more options

Firefox isn't loading websites while other browsers are working perfectly. It often shows "Server not found" error and doesn't load sites 9 out of 10 times. It loads sometimes but very slowly and many elements are not displayed properly.

Things I tried to fix this: 1. Disabled DNS Prefetching 2. Disabled IPv6 3. Cleared Recent History (Everything) 4. Reset Firefox 5. Created a new profile

Any pointers?

Firefox isn't loading websites while other browsers are working perfectly. It often shows "Server not found" error and doesn't load sites 9 out of 10 times. It loads sometimes but very slowly and many elements are not displayed properly. Things I tried to fix this: 1. Disabled DNS Prefetching 2. Disabled IPv6 3. Cleared Recent History (Everything) 4. Reset Firefox 5. Created a new profile Any pointers?

Modified by dnyanesh

All Replies (5)

more options

hello, maybe your security software is blocking the new version of the browser. try to clear all rules for firefox.exe & plugin-container.exe and let the firewall detect the new version of the program again. Fix problems connecting to websites after updating Firefox

more options

I pretty sure that my Antivirus is not blocking the browser. I also tried Waterfox and Cyberfox, both have the same problem.

more options

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

This problem has cropped up again in Firefox 24 for me. I am utterly confused. I have tried all things mention here: [Firefox can't load websites but other browsers can]

more options

Does it have any effect if you boot the computer in Windows Safe mode with network support in case your security software is causing this problem?