Join us to show up for other Firefox users 🦊. Earn fun badges and Mozilla swag vouchers! Find out more: https://mzl.la/askafox150

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Sykje yn Support

Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

enter file - new private window, FF opens new window, then immediately switches back to window that request was made from

  • 5 antwurd
  • 1 hat dit probleem
  • 35 werjeftes
  • Lêste antwurd fan cor-el
  • Oplost

lionelbob
lionelbob

Hit file - new private window, FF opens new window (not private) for about 5 seconds, then immediately switches back to window that requested the new private window. This happens on three different machines at my location, all with Win 7.

Hit file - new private window, FF opens new window (not private) for about 5 seconds, then immediately switches back to window that requested the new private window. This happens on three different machines at my location, all with Win 7.

Keazen oplossing

This can be caused by a plugin like Flash that uses the plugin-container process in one of the tabs in that other window.

Dit antwurd yn kontekst lêze 👍 1

Alle antwurden (5)

Diego Victor
Diego Victor

This happens in safe mode?

Can you see what is the content of that tab?

Also:

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

Keazen oplossing

This can be caused by a plugin like Flash that uses the plugin-container process in one of the tabs in that other window.

lionelbob
lionelbob Fraacheigener

A funny thing happened on the way to the forum. After restarting in safe mode, i cannot get the failure to repeat. I've restarted in regular mode, and I've tried many permutations, with no luck. I use www.yahoo.com as my home page, so that appears when I open a private window. What does not happen is I don't get the purple glasses in the upper right.

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer

Hi lionelbob, it's confusing, but... the purple glasses appear on private windows in a normal, non-private session, so you can tell them apart. When you start up automatically in a private session, then there are no purple glasses on any of the windows.

(Note: This is as of several versions ago, I haven't double-checked recently.)

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

Note that you won't get the purple mask if you are in permanent Private Browsing mode.

  • browser.privatebrowsing.autostart: True