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Bookmark or Share- Restore bookmarks from backup or move them to another computerFirefox automatically creates backups of your bookmarks and saves the last 15 backups for safekeeping. This article describes how to restore your bookmarks from the automatic backups that Firefox creates, how to save and restore your own bookmark backup files, and how to move your bookmarks to another computer.
- Pop-up blocker settings, exceptions and troubleshootingPop-up blocker settings. To access the pop-up blocker settings: In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.
- Install an older version of Firefox | Firefox Help - Mozilla SupportWarning: Firefox now includes downgrade protection to prevent corruption of user profile data.If you install an older version, you'll be prompted to create a new Firefox profile.
- Adding a holiday calendar | Thunderbird Help - Mozilla SupportA holiday calendar lists all the public holidays of a country, and displays these in Thunderbird. There are two methods to add a holiday calendar.
- Firefox can't load websites but other browsers canInternet Security software blocking Firefox. If you were able to load websites until you updated Firefox or until your Internet security software was updated, reconfigured or a new one was added, your Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more) is likely preventing Firefox from connecting to the Internet.
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