Why can’t I create a folder in Windows with the following names CON, PRN, AUX, NUL, LPT1, LPT2, COM1, COM2....???

What Why can’t I create a folder in Windows with the following names CON, PRN, AUX, NUL, LPT1, LPT2, COM1, COM2....???

Why You aren't allowed to create a folder with names that are the same as the ones that have been used for various devices on a PC since DOS era. 
In DOS, "CON" refers to "Console", "PRN" refers to "Printer" and LPT1, LPT2, COM1, COM2 refers to different communication ports.
How There happens to be a workaround for this. To create a folder named "CON" in Windows,
open Command Prompt and type the following: mkdir \\.\D:\CON (This will create a folder named CON in the D drive)
You may be able to view the folder using Windows Explorer, but you will not be able delete it or Copy/Paste files into it.
But yes, you can create new files in it.
To delete this folder, type the following code in command prompt. rmdir \\.\D:\CON