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aux.txt

About this tag
The tag aux.txt refers to a reserved file name in the Windows file system. Windows reserves certain names like AUX, CON, NUL, and PRN for legacy device purposes, preventing users from creating files or folders with these names. Attempting to use aux.txt can cause mysterious errors or unexpected behavior. This tag covers discussions about why Windows does not warn users when they try to use reserved names, the technical limitations behind these restrictions, and troubleshooting issues that arise from accidentally using such names. It is relevant for Windows users encountering file creation problems or seeking to understand file system constraints.
  1. J

    Windows 10 Reserved file names.

    People at various times run into mysterious problems that have no apparent source but are eventually found out to be caused by the innocent use of a file named "aux.txt" or any one of the other reserved file names. It isn't realistic to expect that all users of such an ubiquitous system as...
    • jk8
    • Thread
    • aux.txt error handling file management file system limitations reserved names software design user issues warning windows
    • Replies: 10
    • Forum: Windows Help and Support
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