Follow these instructions step by step.

1) [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.

2) Reboot the computer.

Below is result for test user. This is RDS setup so servers cannot be rebooted during work hours. Users do not have administrative access to servers so Verify Integrity is isolated action against their profile. Logout and back on with test profile, still having same issue.

> 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 4 records + Table moz_places has 15 records + Table moz_historyvisits has 25 records + Table moz_inputhistory has 0 records + Table moz_bookmarks has 13 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 3 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

This has nothing to do with the places.sqlite database.

Any helpful messages about the login manager in the Browser Console is you enable signon debugging?

• signon.debug = true

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

• https://support.mozilla.org/en-US/kb/about-config-editor-firefox

Are you sure you looked in the correct location?

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

• Help -> Troubleshooting Information -> Profile Directory:
  Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder
• https://support.mozilla.org/en-US/kb/about-config-editor-firefox

cor-el said

This has nothing to do with the places.sqlite database.

I did not know if maintenance checked the login's files or not.

"Verify Integrity" only checks places.sqlite and favicons.sqlite like you can see in the first two lines of reports that are generated. You probably use the Places Maintenance extension with the old Firefox version you use that doesn't use favicons.sqlite and only checks places.sqlite.

If anyone else runs into this issue in a TS environment running FSLogix, the problem was with the version of FSLogix.

After working with Microsoft support, they released an updated version which fixed issue. update to latest version of FSLogix to resolve Firefox profile files creation issues https://docs.microsoft.com/en-us/fslogix/install-ht