4K screen is getting popular in recent years. You may see some challenge for legacy applications. Such as “Microsoft Remote Desktop Connection Manager”. It’s stopped developed since 2014. But it’s still a useful tool for server administrators.

You may see the windows overfits screen on 4K display. The fix is:

  1. Go to properties of “RDCMan.exe
  2. Compatibility” tab
  3. Change high DPI settings
  4. Uncheck “Override high DPI scaling behavior“.