The Tahoma font that was used for many versions of Windows worked very well. It used to be a snap to change the fonts used.
Setting up my first Server 2016 for a customer today, my eyes hurt from trying to read the default font "Segoe UI". It seems Microsoft has once again excelled at "new and frustrating ways to do familiar tasks" to the extent that I can't even find where to fix this setting. After 30 minutes wasted I gave up.
Thanks in advance for the help!
Found the solution: I was able to copy some keys from an older system that has screen fonts set to Tahoma. This should probably work for Windows 10 also, but I haven't tested.
Copy/paste the following into a .reg file, then import it into the registry.
[HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics]
"CaptionFont"=hex:f5,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,bc,02,00,00,\
00,00,00,01,00,00,00,00,54,00,61,00,68,00,6f,00,6d,00,61,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"IconFont"=hex:f5,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,90,01,00,00,00,\
00,00,01,00,00,00,00,54,00,61,00,68,00,6f,00,6d,00,61,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"MenuFont"=hex:f5,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,90,01,00,00,00,\
00,00,01,00,00,00,00,54,00,61,00,68,00,6f,00,6d,00,61,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"MessageFont"=hex:f5,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,90,01,00,00,\
00,00,00,01,00,00,00,00,54,00,61,00,68,00,6f,00,6d,00,61,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"SmCaptionFont"=hex:f5,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,bc,02,00,\
00,00,00,00,01,00,00,00,00,54,00,61,00,68,00,6f,00,6d,00,61,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"StatusFont"=hex:f5,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,90,01,00,00,\
00,00,00,01,00,00,00,00,54,00,61,00,68,00,6f,00,6d,00,61,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,\
00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00