STATUSSUCCESS

STATUS_SUCCESS is a standard NTSTATUS value used by Windows NT and related APIs to indicate that an operation completed without error. The canonical numeric value is 0x00000000 (decimal 0). It serves as the primary success code in the Windows NT status code ecosystem.

NTSTATUS is a 32-bit signed value. The most significant bit indicates severity; nonnegative values denote success, while negative values denote errors. The macro NT_SUCCESS(Status) evaluates to true when the value represents success, defined as Status >= 0. In practice, STATUS_SUCCESS is the value returned by many kernel, driver, and user-mode functions when they succeed.

In Windows programming, NTSTATUS values are distinct from Win32 error codes. Some APIs translate NTSTATUS values to HRESULTs or set thread error states, but they remain separate systems. STATUS_SUCCESS generally maps to S_OK in HRESULT contexts, reflecting successful operation in mixed environments.

Related codes in the NTSTATUS family include STATUS_NOT_IMPLEMENTED, STATUS_ACCESS_VIOLATION, STATUS_INVALID_PARAMETER, and STATUS_PENDING. The set of codes is defined in header files such as ntstatus.h and winnt.h and is used across Windows subsystems to convey a wide range of outcomes beyond simple success or failure.

Notes on terminology: while informal references may spell the name as STATUSSUCCESS, the official name is STATUS_SUCCESS. The concept remains the same—a zero-valued status indicating success within the NTSTATUS framework.