ERROR_IS_SUBST_TARGET

An attempt was made to join or substitute a drive for which a directory on the drive is the target of a previous substitute.

Matched as: the code as given (hex)

Source: System Error Codes (0-499) - Win32 apps · CC-BY-4.0 (MicrosoftDocs/sdk-api, repo license verified 2026-10-09) · retrieved 2026-10-09