NtClearEvent
Other → NTSTATUS
NtClearEvent is a Windows NT kernel system call, in the Other category, returning NTSTATUS. Its syscall number is not the same on every Windows release: across the 80 version-and-architecture pairs recorded here it takes 21 distinct values, from 0x000B to 0x0190.
The number is an index into the system service table of one particular build, not a stable identifier, so it is not portable between Windows versions or between x64 and x86. The table below gives the value recorded for each.
Numbers across OS versions (80)
| OS Version | Architecture | Number |
|---|---|---|
| Windows 10 1507 | x64 | 0x003E (62) |
| Windows 10 1507 | x86 | 0x0181 (385) |
| Windows 10 1511 | x64 | 0x003E (62) |
| Windows 10 1511 | x86 | 0x0184 (388) |
| Windows 10 1607 | x64 | 0x003E (62) |
| Windows 10 1607 | x86 | 0x0186 (390) |
| Windows 10 1703 | x86 | 0x018B (395) |
| Windows 10 1703 | x64 | 0x003E (62) |
| Windows 10 1709 | x64 | 0x003E (62) |
| Windows 10 1709 | x86 | 0x018E (398) |
| Windows 10 1803 | x64 | 0x003E (62) |
| Windows 10 1803 | x86 | 0x018E (398) |
| Windows 10 1809 | x64 | 0x003E (62) |
| Windows 10 1809 | x86 | 0x018E (398) |
| Windows 10 1903 | x86 | 0x018E (398) |
| Windows 10 1903 | x64 | 0x003E (62) |
| Windows 10 1909 | x86 | 0x018E (398) |
| Windows 10 1909 | x64 | 0x003E (62) |
| Windows 10 2004 | x86 | 0x018F (399) |
| Windows 10 2004 | x64 | 0x003E (62) |
| Windows 10 20H2 | x86 | 0x018F (399) |
| Windows 10 20H2 | x64 | 0x003E (62) |
| Windows 10 21H1 | x64 | 0x003E (62) |
| Windows 10 21H1 | x86 | 0x018F (399) |
| Windows 10 21H2 | x86 | 0x0190 (400) |
| Windows 10 21H2 | x64 | 0x003E (62) |
| Windows 10 22H2 | x64 | 0x003E (62) |
| Windows 10 22H2 | x86 | 0x0190 (400) |
| Windows 11 and Server 11 21H2 | x64 | 0x003E (62) |
| Windows 11 and Server 11 22H2 | x64 | 0x003E (62) |
| Windows 11 and Server 11 23H2 | x64 | 0x003E (62) |
| Windows 11 and Server 11 24H2 | x64 | 0x003E (62) |
| Windows 11 and Server 11 25H2 | x64 | 0x003E (62) |
| Windows 11 and Server Server 2022 | x64 | 0x003E (62) |
| Windows 11 and Server Server 2025 | x64 | 0x003E (62) |
| Windows 11 and Server Server 23H2 | x64 | 0x003E (62) |
| Windows 2000 SP0 | x86 | 0x0017 (23) |
| Windows 2000 SP1 | x86 | 0x0017 (23) |
| Windows 2000 SP2 | x86 | 0x0017 (23) |
| Windows 2000 SP3 | x86 | 0x0017 (23) |
| Windows 2000 SP4 | x86 | 0x0017 (23) |
| Windows 7 SP0 | x86 | 0x0031 (49) |
| Windows 7 SP0 | x64 | 0x003B (59) |
| Windows 7 SP1 | x64 | 0x003B (59) |
| Windows 7 SP1 | x86 | 0x0031 (49) |
| Windows 8 8.0 | x64 | 0x003C (60) |
| Windows 8 8.0 | x86 | 0x0175 (373) |
| Windows 8 8.1 | x64 | 0x003D (61) |
| Windows 8 8.1 | x86 | 0x017A (378) |
| Windows NT 3.x 3.5 | x86 | 0x000B (11) |
| Windows NT 3.x 3.51 | x86 | 0x000D (13) |
| Windows NT 4.0 SP0 | x86 | 0x000E (14) |
| Windows NT 4.0 SP1 | x86 | 0x000E (14) |
| Windows NT 4.0 SP2 | x86 | 0x000E (14) |
| Windows NT 4.0 SP3 | x86 | 0x000E (14) |
| Windows NT 4.0 SP3 TSE | x86 | 0x000E (14) |
| Windows NT 4.0 SP4 | x86 | 0x000E (14) |
| Windows NT 4.0 SP5 | x86 | 0x000E (14) |
| Windows NT 4.0 SP6 | x86 | 0x000E (14) |
| Windows Server 2003 R2 | x86 | 0x001A (26) |
| Windows Server 2003 R2 | x64 | 0x003B (59) |
| Windows Server 2003 R2 SP2 | x86 | 0x001A (26) |
| Windows Server 2003 R2 SP2 | x64 | 0x003B (59) |
| Windows Server 2003 SP0 | x64 | 0x003B (59) |
| Windows Server 2003 SP0 | x86 | 0x001A (26) |
| Windows Server 2003 SP1 | x86 | 0x001A (26) |
| Windows Server 2003 SP2 | x64 | 0x003B (59) |
| Windows Server 2003 SP2 | x86 | 0x001A (26) |
| Windows Vista SP0 | x64 | 0x003B (59) |
| Windows Vista SP0 | x86 | 0x002F (47) |
| Windows Vista SP1 | x86 | 0x002F (47) |
| Windows Vista SP1 | x64 | 0x003B (59) |
| Windows Vista SP2 | x64 | 0x003B (59) |
| Windows Vista SP2 | x86 | 0x002F (47) |
| Windows XP SP0 | x86 | 0x0018 (24) |
| Windows XP SP1 | x64 | 0x003B (59) |
| Windows XP SP1 | x86 | 0x0018 (24) |
| Windows XP SP2 | x64 | 0x003B (59) |
| Windows XP SP2 | x86 | 0x0018 (24) |
| Windows XP SP3 | x86 | 0x0018 (24) |