In a sea of dark/night themed windows, I find it very difficult to find where one window ends and the other begins as the borders are nearly invisible on my large 4K monitors.
In Registry Editor I have already navigated to
Computer\HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics
and set both "BorderWidth" and "PaddedBorderWidth" to -2730.
Surprisingly, this gives me a very large title bar, which is indeed helpful. However, the actual borders which I hoped to modify remain as obscenely thin as heroin-addicted anorexic supermodels from the 1980s.
How can I fatten them up?
Note: Through further experimentation I've discovered I am getting nice fat borders, but the problem is really that this border is INVISIBLE! And this is a bug which has existed since Windows 10!
See also: Is it possible to turn visible the invisible window's borders of Windows 10?