I don't recall when this started. I had been just ignoring it for a long time, but it's getting tiresome. If I have two copies of a window open, say for instance I have my banking spreadsheet open (I use excel for my spreadsheets) as well as my medical spreadsheet. When I close my banking spreadsheet, on monitor one's taskbar it closes. On monitor two's taskbar it stays open. When I then click on the icon on monitor two's task bar to bring my medical spreadsheet into the foreground I have two icons (one says banking the second says medical) that I have to then choose which one to click on to bring to the foreground, rather than just bringing the medical spreadsheet to the foreground (which is what happens when I click on the icon on monitor one's taskbar). It's not just the spreadsheets this happens to. It occurs with every program I use that allows two versions open at the same time, such as Blizzard's Battlenet app, World of Warcraft game, Firefox web browswer, etc. It hasn't always been like this. I think it started sometime this year, but I really can't recall exactly when. I'm sure with one of the last few updates. I'm sorry I didn't report it sooner so you could narrow down which update did it. But I'm almost certain it didn't occure last year. Edit: I just noticed it happened when I closed DisplayFusion program. I only had one copy open when I saved this topic,(I had opened DisplayFusion to find how to get here to write this topic) I then closed DisplayFusion. Monitor one's taskbar icon when away, but it is still on monitor two's taskbar. When I right click on it, it acts as if the program is still open, I get a drop down menu to "minimize", "move window to next monitor ignore window splits", "move window to next monitor", "span window across all monitors", "close program" etc. When I click on close program nothing happens. The icon stays on monitor two's taskbar.

I hope I did this right.

I believe it worked. I just finished installing it, I opened two versions of windows explorer. Both icons showed up on both monitors' task bars. When I closed one version, both monitors only show one version on their task bars. I believe it is fixed. Thank you.