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!

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

how do I permanently change firefox connection settings to: Use systems sttings for the proxy server?

  • 3 replies
  • 1 has this problem
  • 1 view
  • Last reply by cor-el

hankypanky
hankypanky
more options

I have a Dell PC using Windows Vista. My PC is on a LAN and connected to the Internet via a Router (Proxy Server). After I updated to the latest Firefox, I could no longer get on the internet unless I click on the Firefox emblem in the upper right corner, click on 'options', click on 'settings', and then click on 'Use systems proxy settings'. When I exit Firefox the settings revert to some 'Manual' settings with some strange address. How do I get Firefox to retain the 'Use systems proxy settings'?

I have a Dell PC using Windows Vista. My PC is on a LAN and connected to the Internet via a Router (Proxy Server). After I updated to the latest Firefox, I could no longer get on the internet unless I click on the Firefox emblem in the upper right corner, click on 'options', click on 'settings', and then click on 'Use systems proxy settings'. When I exit Firefox the settings revert to some 'Manual' settings with some strange address. How do I get Firefox to retain the 'Use systems proxy settings'?

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

This issue can be caused by an extension that isn't working properly.

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

hankypanky
hankypanky Question owner
more options

Thanks cor-el. Your advise led me to discover that Plugin Microsoft.net Framework Assistant 0.0.0 is incompatible with Firefox 7. I disabled it and Firefox now works.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You're welcome