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IsValidSid info  Overview  Group

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

BOOL IsValidSid(

    PSID pSid 

// address of SID to query



Points to the SID structure to validate. This must be a non-NULL value.

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. To get extended error information, call GetLastError.


If pSid is NULL, the application will fail with an access violation.

See Also

GetLengthSid, GetSidIdentifierAuthority, GetSidLengthRequired, GetSidSubAuthority, GetSidSubAuthorityCount, SID

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