Why cant we make a folder named "con" in windows??

The following reserved device names cannot be used as the name of a file:

CON, PRN, AUX, CLOCK$, NUL, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, and LPT9.

CON is reserved for console, PRN is reserved for printers………..etc.

You must avoid using these names as file name.But You can make folder named con in c drive from command promt.

Press windows+r and type in cmd

then at the command prompt type md \\.\\c:\con

to remove this folder type rd \\.\\c:\con