NtSetCachedSigningLevel
Set → NTSTATUS
NtSetCachedSigningLevel 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 40 version-and-architecture pairs recorded here it takes 22 distinct values, from 0x005C to 0x0198.
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 (40)
| OS Version | Architecture | Number |
|---|---|---|
| Windows 10 1507 | x86 | 0x0060 (96) |
| Windows 10 1507 | x64 | 0x016E (366) |
| Windows 10 1511 | x86 | 0x0060 (96) |
| Windows 10 1511 | x64 | 0x0171 (369) |
| Windows 10 1607 | x86 | 0x0061 (97) |
| Windows 10 1607 | x64 | 0x0176 (374) |
| Windows 10 1703 | x86 | 0x0061 (97) |
| Windows 10 1703 | x64 | 0x017C (380) |
| Windows 10 1709 | x64 | 0x017F (383) |
| Windows 10 1709 | x86 | 0x0062 (98) |
| Windows 10 1803 | x86 | 0x0062 (98) |
| Windows 10 1803 | x64 | 0x0181 (385) |
| Windows 10 1809 | x64 | 0x0182 (386) |
| Windows 10 1809 | x86 | 0x0062 (98) |
| Windows 10 1903 | x64 | 0x0183 (387) |
| Windows 10 1903 | x86 | 0x0062 (98) |
| Windows 10 1909 | x86 | 0x0062 (98) |
| Windows 10 1909 | x64 | 0x0183 (387) |
| Windows 10 2004 | x86 | 0x0062 (98) |
| Windows 10 2004 | x64 | 0x0189 (393) |
| Windows 10 20H2 | x64 | 0x0189 (393) |
| Windows 10 20H2 | x86 | 0x0062 (98) |
| Windows 10 21H1 | x64 | 0x0189 (393) |
| Windows 10 21H1 | x86 | 0x0062 (98) |
| Windows 10 21H2 | x64 | 0x018B (395) |
| Windows 10 21H2 | x86 | 0x0062 (98) |
| Windows 10 22H2 | x86 | 0x0062 (98) |
| Windows 10 22H2 | x64 | 0x018B (395) |
| Windows 11 and Server 11 21H2 | x64 | 0x0193 (403) |
| Windows 11 and Server 11 22H2 | x64 | 0x0196 (406) |
| Windows 11 and Server 11 23H2 | x64 | 0x0196 (406) |
| Windows 11 and Server 11 24H2 | x64 | 0x0198 (408) |
| Windows 11 and Server 11 25H2 | x64 | 0x0198 (408) |
| Windows 11 and Server Server 2022 | x64 | 0x0191 (401) |
| Windows 11 and Server Server 2025 | x64 | 0x0198 (408) |
| Windows 11 and Server Server 23H2 | x64 | 0x0197 (407) |
| Windows 8 8.0 | x86 | 0x005C (92) |
| Windows 8 8.0 | x64 | 0x0164 (356) |
| Windows 8 8.1 | x86 | 0x005F (95) |
| Windows 8 8.1 | x64 | 0x0167 (359) |