Hi! I'm on a relatively new to me (refurb) desktop computer running Win 10 Pro (64 bit)* and Firefox 143.0.3. In the past week both Firefox and Win 10 have updated. I don't know what happened, but now when I boot up or reboot, my computer opens to MS Edge. Yuck! Every single time I have to reinstall Firefox! Once I do that, all is well again. I have all my bookmarks back, etc. It also keeps changing my "default to Firefox" browser setting, turning it OFF, while I'm using Firefox. I repeatedly have to keep going in and clicking to make FF to the default browser again. Why is it doing this? How do I stop it? Anyway, I know I can't delete Edge or uninstall it. How do I shove it back into the black hole it has lived in until now? Thanks very much in advance for any help offered. :) KathyOnOBX *(Nope - computer not eligible to upgrade to Win 11. My processor isn't fast enough, I think.)