NtSetLowWaitHighThread
Set → NTSTATUS
NtSetLowWaitHighThread is a Windows NT kernel system call, in the Set category, returning NTSTATUS. Its syscall number is not the same on every Windows release: across the 11 version-and-architecture pairs recorded here it takes 5 distinct values, from 0x0095 to 0x00AB.
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. The table below gives the value recorded for each.
Numbers across OS versions (11)
| OS Version | Architecture | Number |
|---|---|---|
| Windows NT 3.x 3.1 | x86 | 0x0095 (149) |
| Windows NT 3.x 3.5 | x86 | 0x009C (156) |
| Windows NT 3.x 3.51 | x86 | 0x00A3 (163) |
| Windows NT 4.0 SP0 | x86 | 0x00AA (170) |
| Windows NT 4.0 SP1 | x86 | 0x00AA (170) |
| Windows NT 4.0 SP2 | x86 | 0x00AB (171) |
| Windows NT 4.0 SP3 | x86 | 0x00AB (171) |
| Windows NT 4.0 SP3 TSE | x86 | 0x00AB (171) |
| Windows NT 4.0 SP4 | x86 | 0x00AB (171) |
| Windows NT 4.0 SP5 | x86 | 0x00AB (171) |
| Windows NT 4.0 SP6 | x86 | 0x00AB (171) |