Noise Reduction (process) window doesn't show up

I did finally think of something. As many have suggested it was a multiple-monitor situation, so I changed my display settings to have the monitors mirror each other instead of sitting beside each other. THEN when I opened the window I could see the corner of it pop up in the bottom right corner of my mirrored screen. Why Adobe hasn't solved this kind of issue in over two decades I will never understand, I lost half a work day to this.

I am having the same problem with no corner of the window sticking out from anywhere. Also tried uninstalling and everything else, it's worked fine for ages and now I've lost half a day of work to what should be a trivial problem.

OK, solution.  My bad...

I have a really big 4k monitor, and it seems that waaaaaaay down in the lower right corner there was a teeny tiny bit of the NR window that was appearing.  Drug it up to the middle of the screen, problem solved.

Hmmmm... tried that, but no luck.  I guess I need to reinstall and wipe my preferences, as my need for NR outweighs my need for the prefs.

Will post if it works or not.

Yep.  I can press Shift-P to capture a noise print, but neither Ctrl+Shift+P nor the menu selection brings up the NR window.  One thing I did notice was that the first time I tried to use Ctrl+Shift+P, the blue highlight around my active window disappeared.  So it's almost like it thinks it displays the window, but I can't see it anywhere.

And this is in Waveform view?

Absolutely nothing.

So if you go Ctrl+Shift+P, what happens?