It is in fact perfectly true that you cannot create a folder named "CON", nor can you rename an existing folder to "CON". However, there is no mystery surrounding this restriction whatsoever. The "team" at Microsoft, and a great many others besides, know perfectly well why you cannot name a folder "CON". "CON" and a number of other character strings are in fact reserved names that go back to the days of DOS and cannot be used to name folders or files. Other reserved names are
Try to create
PRN
AUX
NUL
LPT1
COM1
Potential drive letter - A: to Z:
A number of others
Try to create
PRN
AUX
NUL
LPT1
COM1
Potential drive letter - A: to Z:
A number of others


