Application Basics

Name: Version: Build ID: Distribution ID: Update Channel: User Agent: OS: OS Theme: Rosetta Translated: Multiprocess Windows: Fission Windows: Remote Processes: Enterprise Policies: Google Location Service Key: Google Safebrowsing Key: Mozilla Location Service Key: Safe Mode: Memory Size (RAM): Disk Space Available:

Crash Reports

Remote Features

Remote Processes

Add-ons

Security Software

Type:

Type:

Type:

Legacy User Stylesheets

Active: Stylesheets:

Graphics

Features GPU #1 GPU #2 Diagnostics Decision Log Crash Guard Disabled Features Workarounds Failure Log

Media

Output Devices Name: Group, Vendor, State, Preferred, Format, Channels, Rate, Latency Input Devices Name: Group, Vendor, State, Preferred, Format, Channels, Rate, Latency Media Capabilities Enumerate database Content Decryption Modules Information Key System Name: Video Robustness, Audio Robustness, Capabilities, Clear Lead

Environment Variables

Remote Settings

Status: OK Not working

Status:

Status:

Status: Status Date Infos

Remote Experiments

Important Modified Preferences

Important Locked Preferences

Places Database

Accessibility

Activated: Prevent Accessibility:

Library Versions

Sandbox

Startup Cache

Disk Cache Path: Ignore Disk Cache: Found Disk Cache on Init: Wrote to Disk Cache:

Internationalisation & Localisation

Application Settings Requested Locales: Available Locales: App Locales: Regional Preferences: Default Locale: Operating System System Locales: Regional Preferences:

Remote Debugging (Chromium Protocol)

Accepting Connections: URL:

Printing

Modified print settings

Content Analysis (DLP)

Active: Connected to Agent: Agent Path: Agent Failed Signature Verification: Request Count:

If Firefox starts up after an update without your bookmarks and other settings, check whether your data is available in a different profile:

Inside Firefox, type or paste about:profiles in the address bar and press Enter/Return to load it. The About Profiles page will open. This page should list at least one profile and could list many.

The profile that Firefox is currently using will show:
This is the profile in use and it cannot be deleted.

Please do not delete anything here; don't use any Remove buttons.

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, click the Set as default profile button for that profile on the about:profiles page. Firefox will use it automatically at the next startup.

For more information see Recover user data missing after Firefox update.

Note: If your bookmarks are not available in another Firefox profile, see Recover lost or missing Bookmarks for other solutions.