Hello Discipulus. I agree your clock is far better. I ran pp, but the resulting executable still requires pressing ENTER twice to run. Double-clicking works fine (for that matter, double-clicking on my perl2exe executable also works fine). I am not aware of anything unusual about the Windows 10 cmd.exe on my system. This is sure a head scratcher.

Meanwhile, I have added the executable to the registry "Run" key so the clock comes up automatically when windows is restarted. BTW, the reason I set $mw_left so high is so it will display on the right monitor (more out of the way).

I discovered that adding the executable in the "Run" key as "cmd.exe /c start /min C:\~Zipfile\B\Bat\Clock-Tk.exe" starts the program minimized, so it's cmd window is not displayed on the desktop (much cleaner).

As for the double ENTER, I will keep searching. The program as it stands is pretty much the smallest minimum code that reproduces the problem.