Hi inhale, what method are you using to open the private window? And what indication(s) are you looking for to confirm it's a private window (or not)?

If Firefox is configured for automatic private browsing, then there are no markings or purple welcome page, and all windows are private. The most obvious way to detect that is you won't accumulate any history during a 100% private session. Could that be it? The setting would be here:

• Linux: "3-bar" menu button (or Edit menu) > Preferences
• Windows: "3-bar" menu button (or Tools menu) > Options
• Mac: "3-bar" menu button (or Firefox menu) > Preferences
• Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the left column, click Privacy & Security

On the right side, in the History section, either of these will trigger automatic private browsing:

• "Firefox will: Never remember history"

• "Firefox will: Use custom settings for history" + "Always use private browsing mode"

Hi, Jscher. Yes, I have my browser set to always use private browsing mode and was looking for the purple mask icon. Thank you very much for your assistance with this. I really appreciate it!