Inside the Options Window, in the Home page section, you should see "When Firefox Starts:" then a drop down list. If you click that dropdown, then select "Show my Windows and Tabs from last time", that will activate session restore when you close Firefox.

Make sure that you do not run Firefox in permanent Private Browsing mode and that you keep history.

• https://support.mozilla.org/kb/Private+Browsing

To see all History and Cookie settings, choose:

• Tools > Options > Privacy, choose the setting Firefox will: Use custom settings for history
• Deselect: [ ] "Always use private browsing mode"

Do not use "Clear history when Firefox closes" to clear the "Browsing History".

• https://support.mozilla.org/kb/Clear+Recent+History

There is no Home page section in options and I don't see "When Firefox Starts:" or a drop down list. This is sure a mystery.

Can you attach a screenshot of how you see the Firefox/Tools > Options > General window?

• http://en.wikipedia.org/wiki/Screenshot
• https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem

Here is what I see in options.

You are in Advanced. up at the top of that Window, click "General" (there is General, tabs, etc.). Then you will be at the home page settings.

Thanks so much. That did the trick!