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  1. How can I open an XPI file extension? - Mozilla Support

    Jul 1, 2014 · Windows doesn't recognize that file type, but Firefox does. Drag that XPI into the Firefox browser to install it. Or use File > Open File to install it.

  2. Installing an Add-on in Thunderbird | Thunderbird Help

    Dec 17, 2023 · Some add-on files may have silly names like "latest-234.xpi", which is not very helpful when you're trying to find it later on. Open the Add-ons Manager tab in Thunderbird. …

  3. How can I install and run .xpi browser extension in Windows 7?

    The file is a browser extension for avoiding data tracking designed to run under Mozilla: DoNotTrack+. ver 2.0.8. Can anyone tell me either, how to open the file and install the …

  4. How to download Firefox extension as .xpi-file manually from …

    Nov 3, 2019 · If the addon is already added and you want to still download it from firefox go to the add-on page and view source. Search for xpi which will provide you the link to file (with weird …

  5. How can I open an XPI file extension? - Mozilla Support

    Jul 1, 2014 · Windows doesn't recognize that file type, but Firefox does. Drag that XPI into the Firefox browser to install it. Or use File > Open File to install it.

  6. How do I install an add-on from a file in Firefox? - Super User

    Jun 4, 2020 · If you saved the installer file to your computer, (for example, an .xpi or .jar file) you can install the add-on using the gear icon gear icon in the upper-right area of the Add-on …

  7. How can I open an XPI file extension? - Mozilla Support

    Jul 1, 2014 · Windows doesn't recognize that file type, but Firefox does. Drag that XPI into the Firefox browser to install it. Or use File > Open File to install it.

  8. I'm asked: 'How do I want to open this .xpi file?' Haven't a clue!

    Sep 27, 2017 · Second. Use the instructions I gave you to locate the add-on using Thunderbird's add-on manager (the ideal case) or use Thunderbird add-on manager to open the XPI file (the …

  9. How can I open an XPI file extension? - Mozilla Support

    Jul 1, 2014 · Windows doesn't recognize that file type, but Firefox does. Drag that XPI into the Firefox browser to install it. Or use File > Open File to install it.

  10. I can't open .XPI file on my MAC - Mozilla Support

    Oct 31, 2020 · Search the App Store for an application that can open this document, or choose an existing application on your computer. When I search App Store I can't find any app to open …