Hi Sometimes the download actually worked so check Your browser's '''download history''' (Ctrl + J). If you see a Thunderbird file there, just double-click it or look in your '''Downloads folder''' in File Explorer If the file definitely isn't there, go to the [https://www.thunderbird.net/ official Thunderbird download page] and download. Direct link [https://download.mozilla.org/?product=thunderbird-149.0.1-SSL&os=win64&lang=en-US Thunderbird-149.0.1] or from '''Windows Store''' If the download still won't start, check '''Pop-up Blockers, Security Software'''