We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

firefox updated and now says "Server not found",I checked my proxy settings, windows firewall, and Microsoft security essentials

  • 2 پاسخ
  • 1 has this problem
  • 9 views
  • آخرین پاسخ توسّط philipp

more options

I looked into my proxy settings, and confirmed I do not use one. I deleted firefox from my list of allowed programs and re-added it on windows firewall. I updated my Microsoft security essentials. Windows Explorer connects to websites correctly, but all i get from firefox is Server not found.

I looked into my proxy settings, and confirmed I do not use one. I deleted firefox from my list of allowed programs and re-added it on windows firewall. I updated my Microsoft security essentials. Windows Explorer connects to websites correctly, but all i get from firefox is Server not found.

All Replies (2)

more options

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options)
key, and then starting Firefox. Is the problem still there?


Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia

more options

locking as duplicate, please continue at https://support.mozilla.org/en-US/questions/1101132