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

I could open multiple Firefox windows until last week but cannot anymore. Why?

  • 1 பதிலளி
  • 2 இந்த பிரச்னைகள் உள்ளது
  • 7 views
  • Last reply by cor-el

Until last week, I could open multiple Firefox windows simultaneously, say, one for email, another some news channel, etc. As of last Sunday, I can only open one Firefox window. I have tried repeatedly to start another session while one is open. The request is uniformly ignored.

So, I closed Firefox down (I verified this first), the tried to uninstall it but I kept getting the message that I must close all Firefox windows down before I can uninstall it. I tried it 3 times and got the same result.

So, then I tried to download the latest version and got the same message that I must close all Firefox sessions before I can install the latest version. I had already shut all Firefox sessions before I tried to install the latest version. So, I failed here too.

So, H-E-L-P!!!

Sumit DasGupta

Until last week, I could open multiple Firefox windows simultaneously, say, one for email, another some news channel, etc. As of last Sunday, I can only open one Firefox window. I have tried repeatedly to start another session while one is open. The request is uniformly ignored. So, I closed Firefox down (I verified this first), the tried to uninstall it but I kept getting the message that I must close all Firefox windows down before I can uninstall it. I tried it 3 times and got the same result. So, then I tried to download the latest version and got the same message that I must close all Firefox sessions before I can install the latest version. I had already shut all Firefox sessions before I tried to install the latest version. So, I failed here too. So, H-E-L-P!!! Sumit DasGupta

All Replies (1)

See "Hang at exit":

See "Firefox hangs when you quit it":


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).