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

Wo archive tread sia. Meɖekuku bia biabia yeye ne ehia kpeɖeŋu.

Firefox won't open EMAIL URLs when closed...Only opens them if already open

  • 2 ŋuɖoɖowo
  • 1 masɔmasɔ sia le esi
  • 2 views
  • Nuɖoɖo mlɔetɔ motox22a

motox22a
motox22a
more options

This problem I believe just cropped up with the latest version of Firefox on Windows 51.0.1. When I click on a URL in ANY of my Email Programs it launches Firefox but then Firefox hangs. It does not display the website BUT this only happens if Firefox was CLOSED. If I already have Firefox OPEN then the URL works fine and FIREFOX goes to the website without a problem,

Here's what I've done troubleshooting already.

Tried resetting Firefox....Did not work....Problem remained. Tried completely uninstalling/reinstalling Firefox....Did not work...Problem remained. Disabled Antivirus ( Kaspersky Internet Security)...Did not work...Problem remained.

This problem I believed just cropped up with this latest version of Firefox. I have this same version on another computer with the same antivirus/settings and the problem does not exist.

I'm stumped...I believe I've seen this problem in the past with upgrades but can't seem to find the fix.

This problem I believe just cropped up with the latest version of Firefox on Windows 51.0.1. When I click on a URL in ANY of my Email Programs it launches Firefox but then Firefox hangs. It does not display the website BUT this only happens if Firefox was CLOSED. If I already have Firefox OPEN then the URL works fine and FIREFOX goes to the website without a problem, Here's what I've done troubleshooting already. Tried resetting Firefox....Did not work....Problem remained. Tried completely uninstalling/reinstalling Firefox....Did not work...Problem remained. Disabled Antivirus ( Kaspersky Internet Security)...Did not work...Problem remained. This problem I believed just cropped up with this latest version of Firefox. I have this same version on another computer with the same antivirus/settings and the problem does not exist. I'm stumped...I believe I've seen this problem in the past with upgrades but can't seem to find the fix.

Ŋuɖoɖo si wotia

I FOUND THE PROBLEM...NEW VERSIONS of FIREFOX are opening TWO Copies of FIREFOX.EXE on Some Computers to support a new feature called E10s. I Found this issue when I checked a computer that did not have the problem of launching URLs from Email applications. I noticed that Firefox on that computer did not have Firefox.exe running twice. I found the fix was to disable this NEW FEATURE by doing changing 

browser.tabs.remote.autostart.2 preference to switch the value from true to false in about:config

Now just one instance of Firefox.exe is open in task manager details and when I click on a Email URL it opens correctly in Firefox even when Firefox was CLOSED.

Xle ŋuɖoɖo sia le goya me 👍 0

All Replies (2)

motox22a
motox22a Biabia la
more options

I uninstalled it again...Then installed an older version 50.1 but the problem remains...Only will open a URL from ANY Email Program if Firefox is already OPEN....If Firefox is CLOSED and I click on an Email Link Firefox will open and hang...It will not proceed to the URL's address. I also tried setting to FALSE the setting in about:config "network.protocol-handler.external.mailto" but that also did NOT fix the problem.

motox22a
motox22a Biabia la
more options

Ɖɔɖɔɖo si wotia

I FOUND THE PROBLEM...NEW VERSIONS of FIREFOX are opening TWO Copies of FIREFOX.EXE on Some Computers to support a new feature called E10s. I Found this issue when I checked a computer that did not have the problem of launching URLs from Email applications. I noticed that Firefox on that computer did not have Firefox.exe running twice. I found the fix was to disable this NEW FEATURE by doing changing 

browser.tabs.remote.autostart.2 preference to switch the value from true to false in about:config

Now just one instance of Firefox.exe is open in task manager details and when I click on a Email URL it opens correctly in Firefox even when Firefox was CLOSED.