You have your settings set to "Open previous windows and tabs"

To change this, click on the the horizontal lines in the top right corner then go to Settings > General > At the top of the page you'll see "Startup". Uncheck "Open previous windows and tabs".

This can also happen if Firefox didn't close properly.

• https://support.mozilla.org/en-US/kb/restore-previous-session

Use one of these to close Firefox if you are currently doing that by clicking the close X on the Firefox Title bar, especially if you have multiple windows open to prevent losing tabs in unnoticed windows.

• "3-bar" menu button -> Exit (Power button)
• Windows: File -> Exit
• Mac: Firefox -> Quit Firefox
• Linux: File -> Quit

hi. it does not work. I turned off everything. mozilla continues to launch from the last page that was closed. see the file, these are my settings. greetings.