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Q. How do I clear my browser cache in Firefox?

Answered By: Beth Juhl
Last Updated: Nov 22, 2017     Views: 147

Updated for Firefox Release 57.0, November 2017. 

By default, your web browser stores cookies and other information about sites you visit.  Clearing your browser cache is often the easiest way to fix connection issues with library databases. 

To clear your cache in Firefox

  1. In the top Firefox menu, click on the Tools menu and then select Options.
    No menu? click the menu icon in the upper right corner. 
  2. Choose Options
  3. Select Privacy and Security 
  4. In the Cached Web Content section, click Clear Now

Tell Firefox to always clear the cache (optional)

You can also set Firefox to automatically clear the cache when Firefox closes at the end of each session.

  1. In the top Firefox menu, click on the Tools menu and then select Options.
    No menu? click the menu icon in the upper right corner. 
  2. Choose Options
  3. Select Privacy and Security 
  4. In the History section, set Firefox will: to Use custom settings for history.
  5. Select the check box for Clear history when Firefox closes.
  6. Beside Clear history when Firefox closes, click the Settings… button. The Settings for Clearing History window will open. 
  7. In the Settings for Clearing History window, put a check mark next to Cache
  8. Click OK to close the Settings for Clearing History window. 

A note about site passwords: If you use the Firefox Password Manager option, your saved passwords are not usually deleted when you clear your browser history of cookies and cache.  However, to use Password Manager, you cannot also have the History setting Clear history when Firefox closes.  You must instead use custom History settings

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