HI lindamay,

Unfortunately there is no guaranteed or easy way to do this in Firefox. History is stored in the file in the Profile folder called places.sqlite.

The add on SQLite Manager allows you to open up this file and manage the tables that store the History and Bookmarks of Firefox.

In order to prevent this from happening, please check the preference in Firefox > Options/Preferences > Privacy > History However the cache will get no higher than the default size.

For more information on history:

• Delete browsing, search and download history on Firefox

Or if there is an old profile that has the old history:

• Recovering important data from an old profile

HOWEVER, there are third party software providers that do file restoration. Or if you have a computer back up of the day before recovering the place.sqlite file from that back up could also prove as a recovery.

Sounds that the history got deleted somehow.

In case you are using "Clear history when Firefox closes":

• do not clear the Browsing History

• Tools > Options > Privacy > Firefox will: "Use custom settings for history": [X] "Clear history when Firefox closes" > Settings
• https://support.mozilla.org/kb/Clear+Recent+History

Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, passwords, and other website specific data.

Also make sure that you do not have cleanup or security software that removes the history.

Try to restore a previous version of the places.sqlite file.

• Right-click: Properties > Previous Versions
• http://windows.microsoft.com/en-US/windows7/Previous-versions-of-files-frequently-asked-questions

You can check for problems with the places.sqlite database file in the Firefox profile folder if the problem returns.

• http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox