Hi m.kamareddine7, is your history from that time also missing (you can use the Show Al History or Ctrl+Shift+h keyboard shortcut to check)?

Have you noticed any other odd changes when you start up, such as losing settings changes or add-ons?

Do you use Sandboxie or Portable Firefox, or any other non-standard method of running Firefox?

Firefox can work with multiple profiles, each of which has an independent copy of your data that can vary from the others. Could you check whether your more recent data is available in a different profile, as follows:

Profile Manager Page

Inside Firefox, type or paste about:profiles in the address bar and press Enter/Return to load it.

This page should list at least one profile and could list many. (Each profile has two folders and one or more buttons. Do not use any Remove buttons!)

The profile that Firefox is currently using will have this:

This is the profile in use and it cannot be deleted.

Do you have another profile named default or default-longnumber listed on this page? If so, you can check whether it is the one you were using recently by clicking its Launch profile in new browser button.

If it isn't what you want, simply close that new window.

If it IS what you want, back on the about:profiles page, click the Set as default profile button for that profile so Firefox uses it automatically at the next startup.

Have you discovered anything interesting so far?

I only have one profile. Problem - there was some sort of update on Saturday and when I started my laptop today the past two weeks of bookmarks are gone. I looked in back ups but the only back up is for today. Trouble they are VERY important research and now it is all gone. Is there anyway of getting the previous version and the backups that go with it? How often does firefox do backups. I am so upset about this that I am thinking of going back to Explorer and dumping Firefox completely, you have really done some serious damage.

Is your history also been lost?

[v57+] Places Maintenance is built into Firefox.

Type about:support<enter> in the address bar.

You will find Places Database near the bottom. Press the Verify Integrity button.

When done, copy and post the results here.

If you lost personal data then it is possible that a new default-release profile folder has been created. See "Determine if Firefox has created a new profile":

• https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks

You can open the about:profiles page via the location bar to check whether multiple profiles are present and what profile Firefox currently is using.

• Do NOT click any Remove button on this page.
• https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles
• https://support.mozilla.org/en-US/kb/dedicated-profiles-firefox-installation

Here are the results but I don't think it will help. This morning (after finding as many of the losts bookmarks as possible) I found that it had all been lost again. It is almost as though it is winding the browser back in time. So I uninstalled it and reinstalled, which is why i am not sure if those results will help. Also (yesterday) when I went looking for a restore point there was none but when i entered %APPDATA%\Mozilla\Firefox\Profiles\ in Run dialog it found them all but could not get firefox to recognise the file path. Then today I could get it to recognise it but the past two weeks bookmarks were not there and there was only one restore point for November, as though it had never happened. Trouble is I am now paranoid of ever shutting down my computer again. So am going to do manual HTML back up to a thumb drive. All thoughts and suggestions gratefully received . thanks Lisa

> Task: checkIntegrity + The places.sqlite database is sane + The favicons.sqlite database is sane > Task: invalidateCaches + The caches have been invalidated > Task: checkCoherence + The database is coherent > Task: expire + Database cleaned up > Task: originFrecencyStats + Recalculated origin frecency stats > Task: vacuum + Initial database size is 5120KiB + The database has been vacuumed + Final database size is 5120KiB > Task: stats + Places.sqlite size is 5120KiB + Favicons.sqlite size is 5120KiB + pragma_user_version is 53 + pragma_page_size is 32768 + pragma_cache_size is -2048 + pragma_journal_mode is wal + pragma_synchronous is 1 + History can store a maximum of 112348 unique pages + Table moz_origins has 93 records + Table moz_places has 369 records + Table moz_historyvisits has 409 records + Table moz_inputhistory has 0 records + Table moz_bookmarks has 101 records + Table moz_bookmarks_deleted has 0 records + Table moz_keywords has 0 records + Table sqlite_sequence has 0 records + Table moz_anno_attributes has 0 records + Table moz_annos has 0 records + Table moz_items_annos has 0 records + Table moz_meta has 5 records + Table sqlite_stat1 has 15 records + Index sqlite_autoindex_moz_origins_1 + Index sqlite_autoindex_moz_inputhistory_1 + Index sqlite_autoindex_moz_bookmarks_deleted_1 + Index sqlite_autoindex_moz_keywords_1 + Index sqlite_autoindex_moz_anno_attributes_1 + Index moz_places_url_hashindex + Index moz_places_hostindex + Index moz_places_visitcount + Index moz_places_frecencyindex + Index moz_places_lastvisitdateindex + Index moz_places_guid_uniqueindex + Index moz_places_originidindex + Index moz_historyvisits_placedateindex + Index moz_historyvisits_fromindex + Index moz_historyvisits_dateindex + Index moz_bookmarks_itemindex + Index moz_bookmarks_parentindex + Index moz_bookmarks_itemlastmodifiedindex + Index moz_bookmarks_dateaddedindex + Index moz_bookmarks_guid_uniqueindex + Index moz_keywords_placepostdata_uniqueindex + Index moz_annos_placeattributeindex + Index moz_items_annos_itemattributeindex > Task: _refreshUI