Thanks. i found that article too and saw the moderator's warning that it was old. I tried it anyway, but it didn't work for me. Then I found a separate article (I don't have the link) which said to go to Edit/Preferences/General and uncheck the box "Open documents a new tabs in th same window". Once I did that, it worked. But now if I drag a PDF from one monitor to another, Win11 shows two icons in the new monitor's taskbar (I find that really odd, but I'm new to Win 11, ).