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Can't restore previous session, "recently closed windows" grayed out

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THIS SUCKS YOU HAVE NOT FIX THIS WITH AN UPDATE...

Can't restore previous session, "recently closed windows" grayed out

THIS SUCKS YOU HAVE NOT FIX THIS WITH AN UPDATE... Can't restore previous session, "recently closed windows" grayed out

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Make sure you do not run Firefox in permanent Private Browsing mode (Always use Private Browsing mode; Never Remember History).

  • Settings -> Privacy & Security
    Firefox will: "Use custom settings for history"
  • remove checkmark: [ ] "Always use Private Browsing mode"

In case you use "Clear history when Firefox closes" or otherwise clear history.

  • do not clear the Browsing History
  • clearing "Site Preferences" clears exceptions for cookies, images, pop-up windows, and software installation and exceptions for passwords and other website specific data
  • clearing "Cookies" will remove all cookies including cookies with an allow exception you may want to keep