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- Make Firefox your default browser | Firefox Help - Mozilla Support
How to make Web links open in Firefox automatically by setting it as the default browser on your computer
- Set Firefox as your mail-to default on Windows | Firefox Help
Learn how to set Firefox as your MAILTO default on Windows and configure it to handle mail links seamlessly
- Troubleshoot and diagnose Firefox problems - Mozilla Support
This article includes a series of steps you can follow, that will help you fix most problems with Firefox
- Make Firefox your default browser on Windows | Firefox Help
Whether you're using Windows 10 or the latest Windows 11, this guide will help you set Firefox as your default browser with minimal fuss Setting Firefox as your default browser on Windows has become a bit more involved due to changes in how Windows manages default applications We introduced a new guidance notification feature to help you easily navigate these changes
- Choose your preferred PDF viewer in Firefox | Firefox Help
When Firefox is set as the default PDF viewer, it automatically opens PDF files in the built-in viewer However, you can choose to use another application to view your downloaded PDF files This article will guide you on how to open PDF files with a different viewer, set another viewer as the default, or configure Firefox to always ask which viewer to use
- Mark messages as Read only after I read them - Mozilla Support
I can't find a setting that will allow marking messages as read only after I read them By that I mean only after I click on the message to open it in its own tab I view the new messages in a split screen The current settings allow me to leave them bold as if I hadn't read them even after I've clicked on the message and viewed it in the full TB pane or Mark them as read as soon as they're
- Keyboard shortcuts - perform common Thunderbird tasks quickly
Keyboard shortcuts are quick key combinations that replace mouse navigation This is a list of commonly used keyboard shortcuts in Thunderbird
- Add or remove a search engine in Firefox | Firefox Help
Firefox comes with a set of default search engines, and you can add more from websites, add-ons, or partner pages Some users want to add fully custom search engines, but Firefox only supports this in limited cases without an add-on This article explains what you can and can’t do, and shows the easiest ways to manage your search engines
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