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

Mulongo oyo etiyamaki na archive. Tuna motuna mosusu soki osengeli na lisalisi

web server receioved an invalid response

  • 3 biyano
  • 1 eza na nkokoso oyo
  • 18 views
  • Eyano yasuka ya FredMcD

more options

When trying to access Norton support by selecting help and then support I get the following error: 520 - Web server received an invalid response while acting as a gateway or proxy server. I can access the page with Edge. This is on a new lap top with Norton and Fire Fox installed. Everything else in Norton seems to be working fine. My desktop also has Norton and Fire Fox and I have no problem accessing the page with fire fox on the desk top. Help!!

When trying to access Norton support by selecting help and then support I get the following error: 520 - Web server received an invalid response while acting as a gateway or proxy server. I can access the page with Edge. This is on a new lap top with Norton and Fire Fox installed. Everything else in Norton seems to be working fine. My desktop also has Norton and Fire Fox and I have no problem accessing the page with fire fox on the desk top. Help!!

All Replies (3)

more options
more options

Thank you. I was able to get on Norton support using Edge, but I am trying determine why I am having the problem with Fire Fox. I do not have the problem on my desk top machine while using Fire Fox

more options

Firefox has more strict security to protect the computer and the user.