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Restore previous session not available / tabs from previous settings are not restored

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Dear Madam/Sir,

My computer had a crash today, after that windows was working on some updates. The firefox was updated also, I believe.

Since the updates, whenever the Firefox is closed and later opened again, the previous session is not restored. I have checked the General -> Start-up -> Open previous windows and tabs setting, and the option is ticked, (therefore it should do the session restore).

A have also tried "browser.sessionstore.resume_session_once" changing to "true" and that did not work either, so no previous tabs were restored.

Any ideas, what could have gone wrong and how to this this issue?

Dear Madam/Sir, My computer had a crash today, after that windows was working on some updates. The firefox was updated also, I believe. Since the updates, whenever the Firefox is closed and later opened again, the previous session is not restored. I have checked the General -> Start-up -> Open previous windows and tabs setting, and the option is ticked, (therefore it should do the session restore). A have also tried "browser.sessionstore.resume_session_once" changing to "true" and that did not work either, so no previous tabs were restored. Any ideas, what could have gone wrong and how to this this issue?

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In case you use "Clear history when Firefox closes".

  • do not clear the "Browsing history" as this affects Session Restore

Also make sure that you do not use Private Browsing mode.

See also:

  • using "Clear history when Firefox closes" in Firefox 102+ honors exceptions and keeps cookies with an allow exception, previous versions removed all cookies
  • clearing "Site settings" clears exceptions for cookies, images, pop-up windows, and software installation and exceptions for passwords and other website specific data