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

Proxy reconnection issue

  • 6 replies
  • 1 has this problem
  • 1 view
  • Last reply by Jan

more options

Hello All,

On my Laptop I run Firefox and Ivanti VPN for Customer stuff.

I configured Firefox to use the Windows Network (so proxy) configuration.

When i start the Laptop, so no VPN enabled, and open Firefox. all good and fine.

I enable VPN, Firefox does not load any page, other Browser do. My manual workaround is now, to open the Firefox cofniguration, goto the Proxy settings. Then disable Proxy config, close the Proxy config, go back in and select System defaults. I found online, that this is an old bug and my co worker do not encounter this.

My Firefox has version 119.0.1 (64-Bit)

Thank you in advance.

Hello All, On my Laptop I run Firefox and Ivanti VPN for Customer stuff. I configured Firefox to use the Windows Network (so proxy) configuration. When i start the Laptop, so no VPN enabled, and open Firefox. all good and fine. I enable VPN, Firefox does not load any page, other Browser do. My manual workaround is now, to open the Firefox cofniguration, goto the Proxy settings. Then disable Proxy config, close the Proxy config, go back in and select System defaults. I found online, that this is an old bug and my co worker do not encounter this. My Firefox has version 119.0.1 (64-Bit) Thank you in advance.

All Replies (6)

more options

When version 120 is released, go to about:config and try changing network.http.http2.move_to_pending_list_after_network_change to true then restart the browser. You can test it now by installing Developer Edition.

more options

Tested with Dev version which works fine for me.

more options

Note that the Developer Edition and Beta versions update twice per week. Firefox 120 has been released today.

more options

cor-el said

Note that the Developer Edition and Beta versions update twice per week. Firefox 120 has been released today.

Updated today and changed the config of my default FF to reflect "network.http.http2.move_to_pending_list_after_network_change" = true which was false. Firefox restart. Still same issue. Developer FF works fine.

more options

Is that with 120.0b9 DE or 121.0b1 DE (current release) ?

Modified by cor-el

more options

Hello All,

Unfortunately this is not the solution.

I tested it today with the Dev FF Version 121.0b1 and "Desktop" FF 120.0 "network.http.http2.move_to_pending_list_after_network_change" set to true and still I need to toggle Proxy settings after reconnecting to the proxy.

For the Dev Firefox. I did an uninstall and removed the complete Profile Folder before reinstalling it. Unfortunately still same unwanted behaviour.

Jan