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when firefox starts show my windows and tabs from last time is greyed out

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firefox 4.0 startup. when I go to general under options when firefox starts show my windows and tabs from last time it is grayed out and I can't select it.

firefox 4.0 startup. when I go to general under options when firefox starts show my windows and tabs from last time it is grayed out and I can't select it.

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I fixed this problem myself by changing the history settings. I had it set to never remember history. Once I changed it to remember history I was able to change the setting to show the previous tabs and it stuck.

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Yes, that can happen if you run Firefox in Private Browsing - Use Firefox without saving history mode.

  • You enter Private Browsing mode if you select: Tools > Options > Privacy > History: Firefox will: "Never Remember History"
  • To see all History and Cookie settings, choose: Tools > Options > Privacy, choose the setting Firefox will: Use custom settings for history
  • Uncheck: [ ] "Automatically start Firefox in a private browsing session"