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The IsValidSid function validates a security identifier (SID) by verifying that the revision number is within a known range, and that the number of subauthorities is less than the maximum.

Declare Function IsValidSid Lib "Advapi32" (ByVal pSid As Long) As Long

Operating Systems Supported
Requires Windows NT 3.1 or later; Win9x/ME: Not supported


Parameter Information
- pSid
[in] Pointer to the SID structure to validate. This parameter cannot be NULL.

Return Values
If the SID structure is valid, the return value is nonzero.

If the SID structure is not valid, the return value is zero. There is no extended error information for this function; do not call GetLastError.

Last update: 07 April 2006