IsValidSid function (securitybaseapi.h)

Article
10/13/2021

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.

Syntax

BOOL IsValidSid(
  [in] PSID pSid
);

Parameters

[in] pSid

A pointer to the SID structure to validate. This parameter cannot be NULL.

Return value

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.

Remarks

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

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2003 [desktop apps \| UWP apps]
Target Platform	Windows
Header	securitybaseapi.h (include Windows.h)
Library	Advapi32.lib
DLL	Advapi32.dll