MSN launches when I first open Firefox-It's not the homepage setting
This just started today (7/5/21). When I first log into my PC and open Firefox, an MSN window opens up instead of my homepage.
My homepage setting has not changed. It's still www.duckduckgo.com. If I close the Firefox and re-open it, my homepage appears. As soon as I log in the next time; however, the first thing that opens is the MSN window again, and the cycle continues.
I'm running Windows 10, which is up-to-date. Firefox is up-to-date too. I haven't done anything. I haven't changed any settings or installed anything. This happens with my wife's user account starting today as well.
The closest archived topic I could find was the one below. None of the recommendations work. How do I stop this from happening?
Opaite Mbohovái (1)
Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?
Starting Any Computer In Safe Mode (web link) Free Online Encyclopedia
https://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/
https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10/ +++++++++++++++++++++++++++++++++++++++++++++++ If the problem goes away with the computer in Safe Mode, the problem is with one of the other programs on the system.
As a test, disable your protection programs.