Troubleshooting information page to fix Firefox issues

Firefox includes a page with information such as which Firefox version you are using, any installed extensions, important modified preferences, and graphics information.

Accessing the Troubleshooting Information page

Click the menu button Fx57Menu , click Fx57Help Help and select Troubleshooting Information.

You will be taken to a page with the address about:support.

Give Firefox a tune up

The Refresh Firefox feature can fix many issues by restoring Firefox to its default state while saving your essential information. Consider using it before going through a lengthy troubleshooting process.

Try Safe Mode

You can restart Firefox in Safe Mode to temporarily turn off hardware acceleration, reset some settings, and disable add-ons (extensions and themes) that might be causing problems. See Troubleshoot Firefox issues using Safe Mode for more information.

Try clearing the startup cache

Firefox stores certain temporary data in a startup cache to improve startup speed. Clearing the startup cache and then restarting Firefox can sometimes fix various issues, such as mixed languages in the user interface after an update. This will not change your profile data or add-ons.

Copy to clipboard

You can copy the contents of this page to the Windows clipboard. Clicking the Copy raw data to clipboard button will copy the source data in Json format. Clicking the Copy text to clipboard button will copy a version of the same data in report format for further use. (For privacy reasons, the Application Basics Profile Folder line will not be copied.)

After copying, you can paste the information into another window for someone to see by clicking the Edit menu in the program you are using and then selecting Paste (or by holding down the Ctrl key and pressingV).

Application Basics

  • Name: Tells you the name of the product you are using. In most cases, it should say “Firefox”.
  • Version: Tells you which version number of Firefox you are using.
  • Build ID: The code created automatically to identify the unique environment in which this Firefox installation was built.
  • Update Folder: Shows the path to the folder containing the files update-config.jsonupdates.xmlactive-update.xml (if an update was downloaded but not yet applied) and the updates subfolder. Clicking on Open Folder will take you to the update folder.
  • Update History: Clicking on Show Update History will open a window showing a history of Firefox updates that have been installed.
  • Update Channel: The Update Channel is based on whether Firefox is the standard release, an Extended Support Release (esr), or a Beta, Developer Edition (aurora) or Nightly pre-release.
  • User Agent: In addition to your browser and its version number, the User Agent provides other details about your system, such as the operating system and version.
  • OS: Shows your Operating System.
  • Application Binary: Shows where Firefox is installed.
  • Enabled Plugins: Clicking on about:plugins will take you to a page that lists your installed plugins. For more information, see Watch DRM content on Firefox and Use plugins to play audio, video, games and more.
  • Build Configuration: Clicking on about:buildconfig will take you to a page that will help someone understand if you are using a standard version of Firefox or a custom version.
  • Memory Use: Clicking on about:memory will take you to a page that shows memory usage.
  • Performance: Clicking on about:performance will take you to the Task Manager page. For more information, see Task Manager – see what tabs or extensions are slowing down Firefox.
  • Registered Service Workers: Clicking on about:serviceworkers will show you whether or not the Service Workers feature is enabled and if any current Worker URLs are registered. Service workers are used for web enhancements such as push notifications.
  • Launcher Process: This shows the status of the security-related Launcher Process for Firefox on Windows (enabled by default since Firefox version 68).
  • Multiprocess Windows: This shows you the number of Multiprocess Firefox windows (if any) and the total number of windows that are open.
  • Enterprise Policies: This shows you if your browser is being managed by Windows Group Policy or a policies.json file. If enterprise policies are managing Firefox, clicking on Active will show you a list of the policies that are currently active on Firefox.
  • Safe Mode: This tells you whether or not Firefox is currently in Safe Mode.
  • Profiles: Clicking on about:profiles will take you to the Profile Manager.

Places Database

Firefox periodically performs maintenance tasks on your bookmarks and history database (also known as Places database). Use the Verify Integrity button to perform those tasks on-demand. If you’re having any problems with bookmarks and history, the Verify Integrity tool might help.

JavaScript

This section displays some JavaScript settings that can impact your browsing performance.

Accessibility

This section shows if you have accessibility software enabled in Firefox.

Library Versions

This section tells you which versions of some runtime libraries are used.

Crash Reports for the Last 3 Days

This section lists crash Report IDs, if any, submitted by the Mozilla Crash Reporter during the last three days. Clicking on one of the Report ID links will take you to a web page with details about that crash. Clicking on the All Crash Reports link will take you to the about:crashes page listing all submitted crash reports.

Firefox Features

Some features included in Firefox, such as Pocket and Firefox Screenshots, are installed as extensions so that they can be updated separately from Firefox. These extensions (sometimes called system add-ons) are not listed in the Add-ons Manager.

Add-ons

Extensions are Firefox add-ons that provide additional functionality to Firefox. This section lists the name of each extension, its version, whether it is enabled, and its ID string.

Graphics

Firefox can use your computer’s graphics processor to speed up the display of some pages with video and animation, which is called hardware acceleration, and to display WebGL content. This section provides information about your computer’s graphics device and driver and will tell you whether hardware acceleration and WebGL are enabled or not in Firefox. Note that graphics features may be disabled because of outdated graphics drivers.

Media

This section displays information about your system audio. The displayed information will include your operating system’s preferred audio settings, as well as the audio input (such as microphones) and output (such as speakers or headphones) devices. From here you can also see the state of each device and some information about the audio format settings.

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