Have you Created Folder having name "CON" , "AUX" ,"NUL"??

 Ever tried to create a folder "CON" or "AUX" or "NUL".

Tried now???  - not working :)

Here you go, a simple method to  stop your anxiety

Rename folder from the right click option........
Now press alt and press 255...
press 255 frm the right side of the key bords i.e, Num pad.
where only numbers are given.....
now write con and then press enter.....yayyy!!
you ll see a con folder in ur pc
and also you can delete it easily.

* * Reason: In Windows and DOS utilities, some words might also be reserved and can not be used as filenames in the following below

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