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.

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

Denne tråden ble arkivert. Still et nytt spørsmål dersom du trenger hjelp.

can't open multiple FF windows anymore

  • 3 svar
  • 2 har dette problemet
  • 5 views
  • Siste svar av bruno88

bruno88
bruno88
more options

Hey there,

maybe two months ago I updated to FF 31.0 and then the problems started. The first thing I recognized, one of my AddOns didn't work as usual, but I thought "ok, new FF version, maybe in one or two weeks it'll work as well" Then I recognized that I can't open anymore multiple FF windows. Tabs works as usual, but there is no way to open more than one window. I tried: - Strg+N - rightclick on tab and "open in new window" - drag&drop tab outside of the FF window ... nothing works!

A new update of my AddOn was released, but this didn't change anything.

Then I exported my Favorites, uninstalled FF 31.0 and installed 32.0 beta. I reinstalled my AddOn, few days ago I installed 33.0 beta - always the same!

Please gimme some advice =)

Hey there, maybe two months ago I updated to FF 31.0 and then the problems started. The first thing I recognized, one of my AddOns didn't work as usual, but I thought "ok, new FF version, maybe in one or two weeks it'll work as well" Then I recognized that I can't open anymore multiple FF windows. Tabs works as usual, but there is no way to open more than one window. I tried: - Strg+N - rightclick on tab and "open in new window" - drag&drop tab outside of the FF window ... nothing works! A new update of my AddOn was released, but this didn't change anything. Then I exported my Favorites, uninstalled FF 31.0 and installed 32.0 beta. I reinstalled my AddOn, few days ago I installed 33.0 beta - always the same! Please gimme some advice =)

All Replies (3)

bruno88
bruno88 Eieren av spørsmålet
more options

PS: I missed to name the AddOn - it's "DownloadHelper 4.9.24"

the-edmeister
the-edmeister
  • Moderator
more options

Try Firefox Safe Mode to see if the problem goes away. Firefox Safe Mode is a troubleshooting mode that turns off some settings, disables most add-ons (extensions and themes).

If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:

  • In Firefox 29.0 and above, click the menu button New Fx Menu, click Help Help-29 and select Restart with Add-ons Disabled.
  • In previous Firefox versions, click on the Firefox button at the top left of the Firefox window and click on Help (or click on Help in the Menu bar, if you don't have a Firefox button) then click on Restart with Add-ons Disabled.

If Firefox is not running, you can start Firefox in Safe Mode as follows:

  • On Windows: Hold the Shift key when you open the Firefox desktop or Start menu shortcut.
  • On Mac: Hold the option key while starting Firefox.
  • On Linux: Quit Firefox, go to your Terminal and run firefox -safe-mode
    (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)

When the Firefox Safe Mode window appears, select "Start in Safe Mode".
Safe Mode Fx 15 - Win

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one. Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.

To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

When you figure out what's causing your issues, please let us know. It might help others with the same problem.

bruno88
bruno88 Eieren av spørsmålet
more options

Thanks - thread can be closed! Problem solved.

Solution: I ran "Safe Mode" Everything worked fine. I restarted FF - deinstalled my AddOns one by one until everything worked fine. Reinstalled the others. Done!

Thanks for great support!