Why are files skipped with the error “unsupported filename” in jobs where the destination is formatted as NTFS or exFAT?


Last modified date: 2018-03-07

When backing up or syncing to an NTFS or exFAT file system, filenames must conform to the following naming conventions:

  • The maximum length of a filename is 255 characters.
  • The following characters are not allowed in filenames: \ / : * ? " < > |

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