Places Maintenance {web link} Allows to run Maintenance tasks on the database that drives Places, the bookmarks and history module behind Firefox.

Open the Add-ons Manager. Locate the add-on and press the Options button. Then follow the directions.

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options) key, and then starting Firefox. Is the problem still there?

While still in Safe Mode,

Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Then in the reply box at the bottom of this page, do a right click in the box and select Paste. This will show us your system details. No Personal Information Is Collected.

It is possible that there is a problem with key3.db (encryption key) and logins.json (encrypted names and passwords) in Firefox. You can open the logins.json file in the Scratchpad (Firefox/Tools > Web Developer) to check its content. Click the "Pretty Print" button to format the file for readability. If there are names and encrypted passwords in logins.json then there is likely a problem with the key3.db file that stores the encryption key. You can rename the key3.db file (key3.db.old) and logins.json file (logins.json.old) or move these files to another folder to make it possible to undo the action. Rename or remove a possible signons.sqlite file (signons.sqlite.old) used by older Firefox versions. You need to set a new Master Password after renaming or deleting key3.db and all currently saved passwords are lost. If that has worked then you can remove the renamed files that are no longer needed. Otherwise you can rename the files to their previous names (key3.db and logins.json).

You can use this button to go to the current Firefox profile folder:

• Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
• http://kb.mozillazine.org/Profile_folder_-_Firefox

Application Basics Name: Firefox Version: 43.0.4 Build ID: 20160105164030 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0 Multiprocess Windows: 0/6 (default: false) Safe Mode: true Crash Reports for the Last 3 Days Extensions Name: Empty Cache Button Version: 2.7.1-signed Enabled: false ID: {4cc4a13b-94a6-7568-370d-5f9de54a9c7f} Name: IE Tab 2 (FF 3.6+) Version: 5.12.12.1.1-signed Enabled: false ID: {1BC9BA34-1EED-42ca-A505-6D2F1A935BBB} Name: JS Print Setup Version: 0.9.5.1 Enabled: false ID: [email protected] Name: Logitech Device Detection Version: 1.23.0.5 Enabled: false ID: [email protected] Name: Places Maintenance Version: 2.0.1 Enabled: false ID: [email protected] Name: Restart Version: 1.2.8 Enabled: false ID: [email protected] Name: Save Session Version: 1.3.1.6.1-signed Enabled: false ID: [email protected] Name: Session Manager Version: 0.8.1.9 Enabled: false ID: {1280606b-2510-4fe0-97ef-9b5a22eafe30} Name: Show me the password Version: 1.1.1.1-signed Enabled: false ID: [email protected] Name: Show/hide passwords Version: 0.3.1-signed Enabled: false ID: [email protected] Name: Tab Mix Plus Version: 0.4.2.0 Enabled: false ID: {dc572301-7619-498c-a57d-39143191b318} Name: Video DownloadHelper Version: 5.4.2 Enabled: false ID: {b9db16a4-6edc-47ec-a1f4-b86292ed211d} Graphics Adapter Description: AMD Radeon(TM) R7 Graphics Adapter Drivers: aticfx64 aticfx64 aticfx64 amdxc64 aticfx32 aticfx32 aticfx32 amdxc32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 Adapter RAM: 1024 Asynchronous Pan/Zoom: none Device ID: 0x130f DirectWrite Enabled: false (10.0.10586.0) Driver Date: 7-6-2015 Driver Version: 15.200.1055.0 GPU #2 Active: false GPU Accelerated Windows: 0/6 Basic (OMTC) Subsys ID: 00000000 Supports Hardware H264 Decoding: No; Hardware video decoding disabled or blacklisted Vendor ID: 0x1002 windowLayerManagerRemote: true AzureCanvasBackend: skia AzureContentBackend: cairo AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0 Important Modified Preferences accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 browser.cache.disk.hashstats_reported: 1 browser.cache.disk.smart_size_cached_value: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 2 browser.download.importedFromSqlite: true browser.download.manager.alertOnEXEOpen: true browser.download.useDownloadDir: false browser.history_expire_days.mirror: 180 browser.places.importBookmarksHTML: false browser.places.importDefaults: false browser.places.leftPaneFolderId: -1 browser.places.migratePostDataAnnotations: false browser.places.smartBookmarksVersion: 7 browser.places.updateRecentTagsUri: false browser.search.useDBForOrder: true browser.sessionstore.upgradeBackup.latestBuildID: 20160105164030 browser.startup.homepage: http://www.google.com browser.startup.homepage_override.buildID: 20160105164030 browser.startup.homepage_override.mstone: 43.0.4 browser.tabs.loadInBackground: false browser.tabs.onTop: false browser.tabs.warnOnClose: false browser.zoom.full: false dom.apps.reset-permissions: true dom.ipc.plugins.enabled.npietab2.dll: true dom.mozApps.used: true dom.w3c_touch_events.expose: false extensions.lastAppVersion: 43.0.4 font.internaluseonly.changed: false font.size.variable.x-western: 17 general.useragent.extra.microsoftdotnet: ( .NET CLR 3.5.30729; .NET4.0C) gfx.crash-guard.d3d11layers.appVersion: 43.0.4 gfx.crash-guard.d3d11layers.deviceID: 0x130f gfx.crash-guard.d3d11layers.driverVersion: 15.200.1055.0 gfx.crash-guard.d3d11layers.feature-d2d: true gfx.crash-guard.d3d11layers.feature-d3d11: true gfx.crash-guard.glcontext.gfx.driver-init.direct3d11-angle: true gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle: true gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-force-d3d11: false gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-force-warp: false gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-try-d3d11: true gfx.crash-guard.status.d3d11layers: 2 gfx.crash-guard.status.d3d9video: 2 gfx.crash-guard.status.glcontext: 2 gfx.direct3d.last_used_feature_level_idx: 0 gfx.direct3d.prefer_10_1: true gfx.driver-init.appVersion: 42.0 gfx.driver-init.deviceID: 0x0102 gfx.driver-init.driverVersion: 9.17.10.4229 gfx.driver-init.feature-d2d: true gfx.driver-init.feature-d3d11: true gfx.driver-init.status: 2 media.gmp-eme-adobe.abi: x86-msvc media.gmp-eme-adobe.lastUpdate: 1446655853 media.gmp-eme-adobe.version: 15 media.gmp-gmpopenh264.abi: x86-msvc media.gmp-gmpopenh264.lastUpdate: 1451518514 media.gmp-gmpopenh264.version: 1.5.3 media.gmp-manager.buildID: 20160105164030 media.gmp-manager.lastCheck: 1453396511 media.hardware-video-decoding.failed: false network.cookie.prefsMigrated: true network.http.max-persistent-connections-per-server: 10 network.predictor.cleaned-up: true places.database.lastMaintenance: 1452924358 places.history.expiration.transient_current_max_pages: 104858 places.history.expiration.transient_optimal_database_size: 150221946 places.last_vacuum: 1303237445 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true plugin.state.npdeployjava: 0 plugin.state.npffadapter: 0 plugin.state.npfireie: 0 plugin.state.npietab: 0 plugin.state.nppdf: 0 print.print_printer: OKI C3200n print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_bgcolor: false print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_bgimages: false print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_colorspace: print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_command: print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_downloadfonts: false print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_duplex: 117 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_edge_bottom: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_edge_left: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_edge_right: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_edge_top: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_evenpages: true print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_footercenter: print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_footerleft: &PT print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_footerright: &D print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_headercenter: print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_headerleft: &T print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_headerright: &U print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_in_color: true print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_margin_bottom: 0.5 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_margin_left: 0.5 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_margin_right: 0.5 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_margin_top: 0.5 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_oddpages: true print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_orientation: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_page_delay: 50 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_paper_data: 1 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_paper_height: 11.00 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_paper_name: print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_paper_size_type: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_paper_size_unit: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_paper_width: 8.50 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_plex_name: print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_resolution: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_resolution_name: print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_reversed: false print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_scaling: 1.00 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_shrink_to_fit: true print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_to_file: false print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_unwriteable_margin_bottom: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_unwriteable_margin_left: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_unwriteable_margin_right: 0 print.printer_Brother_MFC-J4510DW_Printer_(Wired_Net).print_unwriteable_margin_top: 0 print.printer_Brother_MFC-J4510DW_Printer.print_bgcolor: false print.printer_Brother_MFC-J4510DW_Printer.print_bgimages: false print.printer_Brother_MFC-J4510DW_Printer.print_colorspace: print.printer_Brother_MFC-J4510DW_Printer.print_command: print.printer_Brother_MFC-J4510DW_Printer.print_downloadfonts: false print.printer_Brother_MFC-J4510DW_Printer.print_duplex: 117 print.printer_Brother_MFC-J4510DW_Printer.print_edge_bottom: 0 print.printer_Brother_MFC-J4510DW_Printer.print_edge_left: 0 print.printer_Brother_MFC-J4510DW_Printer.print_edge_right: 0 print.printer_Brother_MFC-J4510DW_Printer.print_edge_top: 0 print.printer_Brother_MFC-J4510DW_Printer.print_evenpages: true print.printer_Brother_MFC-J4510DW_Printer.print_footercenter: print.printer_Brother_MFC-J4510DW_Printer.print_footerle

Reset the logins.json and the Key3.dbf and it seems to be saving them now.

Thanks so much to you both

Tom