NtQueueApcThreadEx
Other → NTSTATUS
NtQueueApcThreadEx 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 44 version-and-architecture pairs recorded here it takes 24 distinct values, from 0x008A to 0x0172.
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 (44)
| OS Version | Architecture | Number |
|---|---|---|
| Windows 10 1507 | x64 | 0x014B (331) |
| Windows 10 1507 | x86 | 0x008F (143) |
| Windows 10 1511 | x86 | 0x008F (143) |
| Windows 10 1511 | x64 | 0x014E (334) |
| Windows 10 1607 | x86 | 0x0090 (144) |
| Windows 10 1607 | x64 | 0x0152 (338) |
| Windows 10 1703 | x86 | 0x0090 (144) |
| Windows 10 1703 | x64 | 0x0158 (344) |
| Windows 10 1709 | x86 | 0x0091 (145) |
| Windows 10 1709 | x64 | 0x015B (347) |
| Windows 10 1803 | x64 | 0x015D (349) |
| Windows 10 1803 | x86 | 0x0091 (145) |
| Windows 10 1809 | x86 | 0x0091 (145) |
| Windows 10 1809 | x64 | 0x015E (350) |
| Windows 10 1903 | x86 | 0x0091 (145) |
| Windows 10 1903 | x64 | 0x015F (351) |
| Windows 10 1909 | x86 | 0x0091 (145) |
| Windows 10 1909 | x64 | 0x015F (351) |
| Windows 10 2004 | x86 | 0x0091 (145) |
| Windows 10 2004 | x64 | 0x0165 (357) |
| Windows 10 20H2 | x64 | 0x0165 (357) |
| Windows 10 20H2 | x86 | 0x0091 (145) |
| Windows 10 21H1 | x64 | 0x0165 (357) |
| Windows 10 21H1 | x86 | 0x0091 (145) |
| Windows 10 21H2 | x86 | 0x0091 (145) |
| Windows 10 21H2 | x64 | 0x0166 (358) |
| Windows 10 22H2 | x86 | 0x0091 (145) |
| Windows 10 22H2 | x64 | 0x0166 (358) |
| Windows 11 and Server 11 21H2 | x64 | 0x016D (365) |
| Windows 11 and Server 11 22H2 | x64 | 0x0170 (368) |
| Windows 11 and Server 11 23H2 | x64 | 0x0170 (368) |
| Windows 11 and Server 11 24H2 | x64 | 0x0172 (370) |
| Windows 11 and Server 11 25H2 | x64 | 0x0172 (370) |
| Windows 11 and Server Server 2022 | x64 | 0x016B (363) |
| Windows 11 and Server Server 2025 | x64 | 0x0172 (370) |
| Windows 11 and Server Server 23H2 | x64 | 0x0171 (369) |
| Windows 7 SP0 | x64 | 0x012E (302) |
| Windows 7 SP0 | x86 | 0x010E (270) |
| Windows 7 SP1 | x86 | 0x010E (270) |
| Windows 7 SP1 | x64 | 0x012E (302) |
| Windows 8 8.0 | x64 | 0x0142 (322) |
| Windows 8 8.0 | x86 | 0x008A (138) |
| Windows 8 8.1 | x64 | 0x0145 (325) |
| Windows 8 8.1 | x86 | 0x008D (141) |