At startup, Firefox still displays my windows and labels last time, even though I have selected the option to view my homepage.

Question: Although my option is to show my home page at startup, Firefox still displays my my windows and tabs from last time.

More details:
I use Microsoft Surface Pro 3 with Windows Pro 10 and Firefox v 40.0.2
I chose option to start Firefox to display my home page. Please see attached screenshot. The homepage is the Mozilla Firefox Start Page. However I tried other sites such as www.cognizant.com, www.cnn.com.

I also tried to start by selecting a blank page. Always on starting Firefox displays the windows and tabs from last time.

I also deleted the (renamed) prefs.js file and restarted firefox. This step NOT solved this problem.

Help, please. Thank you

You can check if you have a user.js file in the Firefox profile folder that affects the pref browser.sessionstore.resume_session_once true value.

The user.js file will be present if you or a other software created this file and normally will not present.

You can check its contents with a text editor (right click: 'Open with'; do not double-click).
The user.js file is read whenever Firefox is started and initializes the preferences to the specified value in this file, so the preferences set via user.js can be changed temporarily for the current session.

You can remove the user.js file if you do not create this file yourself.

You can use this button to go to the current Firefox profile folder:

Windows hides certain default file extensions.
Among them .html and .ini and .js and .txt, and you can see only a file name without file extension.
You can check the file extension (type) in the file properties in Windows Explorer via the context menu.

Tags: Firefox

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