Hi I found the solution to this problem I experienced today. It's exactly what user buythiscanoe described. However, his query was archived, and they offer a rather radical solution, as you can see at: https://support.mozilla.org/mk/questions/1335025#question-replyhttps://support.mozilla.org/mk/questions/1335025#question-reply I didn't want to go so far as to uninstall, which involves copying my user folder, which is quite large due to the amount of customization, history, bookmarks, and extensions. So I quickly explored settings and found a new section called Firefox Labs. I found an optional development that you can try, due September 2025, which has the following description: Add sites to your taskbar Open sites you frequently visit as a web app from your taskbar. Look for the "Add to taskbar" icon to the right of the address bar to launch that site in a streamlined window with all of Firefox's protections. So, I simply enabled the option. And problem solved, the Firefox icon returned to my taskbar in Windows 11. And since I'm not yet familiar with this feature in Windows 11, but I did use it in Safari on macOS, I unchecked the box and the problem didn't reappear. It solved the loss of the Firefox icon in the taskbar. I don't know if this is the right channel to provide these contributions, or if I've categorized this question correctly. But since I've been using Firefox for 6 years and have taken advantage of these Firefox forums, I think this is a perfect opportunity to make my first contribution.