AzDude, must say I'm sorry I followed your recommendation and purged Fences with the file I downloaded from the link provided above. Major computer crash, Drive C: was damaged and may have to be reimaged or replaced.
Fences seem to work alright on Windows 11; however, in my case, after the initial startup: (1) the 'stay on top' Fence does not show on the desktop, (2) in order to see it, I have to left-click on the desktop and then it appears, (3) double left-click on the desktop and the 'hidden' Fences appear as they should. So, it appears to be working, but it is annoying that the 'stay on top' does not show until clicking on the desktop. BTW, in my case again, right-clicking on the desktop