Lots of stories read about folders or files with names CON, PRN, AUX, NUL etc cannot be created in Windows as these are reserved names for DOS devices.
But there is a way to go around to create folders with these names.
(If you REALLY REALLY want it by that name)
STEP1: goto command prompt
STEP2: type in prompt c:> “mkdir \.c:NUL“
STEP3: verify by typing “dir \.c:NUL“
STEP4: delete the file or folder “rmdir \.c:NUL“
\. <-- this lets the windows know that the name NUL used is not the name for DOS devices but instead it is used for creating a Windows directory.