From MozillaZine Knowledge Base

Background

Firefox 2.0 introduces a built-in Session Restore feature, allowing the user to continue browsing from where they left off if browser restarts. This preference controls whether the feature is on.

Possible values and their effects

True

Record information about the current browser session (open windows and tabs, history, cookies, form data) so it can be restored if necessary. (Default)

False

Disable the Session Restore service completely.

Caveats

• For the browser session to be restored at startup after a crash, browser.sessionstore.resume_from_crash must be true.
• For the browser session to be restored at startup normally, browser.startup.page must be 3.

First checked in

• 2006-04-26 by Mike Connor

Has an effect in

• Mozilla Firefox 3.0 and below. Since Firefox 3.5 this preference is superseded with setting browser.sessionstore.max_tabs_undo and browser.sessionstore.max_windows_undo to 0.

Related bugs

• Bug 328154 - Restore User's Session on App Launch
• Bug 328159 - Wire up the Session-data Service

Related preferences

• browser.sessionstore.interval
• browser.sessionstore.max_tabs_undo
• browser.sessionstore.max_windows_undo
• browser.sessionstore.privacy_level
• browser.sessionstore.resume_from_crash
• browser.sessionstore.resume_session
• browser.sessionstore.resume_session_once

External links

• Session Restore - MozillaWiki