Confirmed this still exists in W10 bit of web search and found there resrve from DOS days, others are AUX, NUL, COM1-COM9, PRN, LPT1-LPT9.<p><a href="https://answers.microsoft.com/en-us/windows/forum/all/file-name-as-con-cannot-be-created-on-desktop-can/c41e136a-56ac-4385-b119-3773cdee7a9c" rel="nofollow">https://answers.microsoft.com/en-us/windows/forum/all/file-n...</a>