Geoff Chappell, Software Analyst
The first ApiSetSchema.dll, i.e., version 6.1 for Windows 7, defines the same 35 API Sets for both 32-bit and 64-bit Windows.
Some of these original API Sets are listed in documentation for Windows 8. More presumably would have, except that they are superseded, a larger Set being documented instead. Tracking what Microsoft reveals of API Sets, and deciding how to summarise it, may be an exercise without end.
| API Set | Default Host | Exceptional Mappings (Importer → Host) | Remarks |
|---|---|---|---|
| API-MS-Win-Core-Console-L1-1-0 | kernel32.dll in 6.1 only; kernelbase.dll in 6.2 and higher |
documented for Windows 8 | |
| API-MS-Win-Core-DateTime-L1-1-0 | kernel32.dll in 6.1; kernelbase.dll in 6.2 to 6.3 |
discontinued in 10.0 | |
| API-MS-Win-Core-Debug-L1-1-0 | kernelbase.dll | discontinued in 10.0 | |
| API-MS-Win-Core-DelayLoad-L1-1-0 | kernel32.dll | kernel32.dll → kernelbase.dll in 6.2 to 6.3 | discontinued in 10.0 |
| API-MS-Win-Core-ErrorHandling-L1-1-0 | kernel32.dll in 6.1; kernelbase .dll in 6.2 to 6.3 |
kernel32.dll → kernelbase.dll in 6.1 only |
discontinued in 10.0 |
| API-MS-Win-Core-Fibers-L1-1-0 | kernelbase.dll | discontinued in 10.0 | |
| API-MS-Win-Core-File-L1-1-0 | kernel32.dll in 6.1; kernelbase.dll in 6.2 to 6.3 |
kernel32.dll → kernelbase.dll in 6.1 only |
discontinued in 10.0 |
| API-MS-Win-Core-Handle-L1-1-0 | kernel32.dll in 6.1; kernelbase.dll in 6.2 to 6.3 |
kernel32.dll → kernelbase.dll in 6.1 only |
discontinued in 10.0; documented for Windows 8 |
| API-MS-Win-Core-Heap-L1-1-0 | kernelbase.dll | ||
| API-MS-Win-Core-Interlocked-L1-1-0 | kernelbase.dll | discontinued in 10.0 | |
| API-MS-Win-Core-IO-L1-1-0 | kernel32.dll | kernel32.dll → kernelbase.dll | discontinued in 10.0 |
| API-MS-Win-Core-LibraryLoader-L1-1-0 | kernelbase.dll | discontinued in 10.0 | |
| API-MS-Win-Core-Localization-L1-1-0 | kernelbase.dll | ||
| API-MS-Win-Core-LocalRegistry-L1-1-0 | kernel32.dll in 6.1 only; kernelbase.dll in 6.2 and higher |
||
| API-MS-Win-Core-Memory-L1-1-0 | kernelbase.dll | discontinued in 10.0 | |
| API-MS-Win-Core-Misc-L1-1-0 | kernelbase.dll | no file in 6.2 and higher | |
| API-MS-Win-Core-NamedPipe-L1-1-0 | kernelbase.dll | ||
| API-MS-Win-Core-ProcessEnvironment-L1-1-0 | kernelbase.dll | discontinued in 10.0 | |
| API-MS-Win-Core-ProcessThreads-L1-1-0 | kernel32.dll | kernel32.dll → kernelbase.dll | discontinued in 10.0 |
| API-MS-Win-Core-Profile-L1-1-0 | kernelbase.dll | documented for Windows 8 | |
| API-MS-Win-Core-RtlSupport-L1-1-0 | ntdll.dll | discontinued in 10.0 | |
| API-MS-Win-Core-String-L1-1-0 | kernelbase.dll | documented for Windows 8 | |
| API-MS-Win-Core-Synch-L1-1-0 | kernel32.dll in 6.1 only; kernelbase.dll in 6.2 and higher |
kernel32.dll → kernelbase.dll in 6.1 only |
discontinued in 10.0 |
| API-MS-Win-Core-SysInfo-L1-1-0 | kernelbase.dll | discontinued in 10.0 | |
| API-MS-Win-Core-ThreadPool-L1-1-0 | kernelbase.dll | ||
| API-MS-Win-Core-UMS-L1-1-0 | kernel32.dll | no file in 6.1 (x86 only); discontinued in 6.2 (x86 only) |
|
| API-MS-Win-Core-Util-L1-1-0 | kernel32.dll | kernel32.dll → kernelbase.dll | discontinued in 10.0; documented for Windows 8 |
| API-MS-Win-Core-XState-L1-1-0 | ntdll.dll | discontinued in 10.0 | |
| API-MS-Win-Security-Base-L1-1-0 | kernelbase.dll | discontinued in 10.0 | |
| API-MS-Win-Security-LSALookup-L1-1-0 | sechost.dll | discontinued in 10.0 | |
| API-MS-Win-Security-SDDL-L1-1-0 | sechost.dll | documented for Windows 8 | |
| API-MS-WIN-Service-Core-L1-1-0 | sechost.dll | discontinued in 10.0 | |
| API-MS-WIN-Service-Management-L1-1-0 | sechost.dll | documented for Windows 8 | |
| API-MS-WIN-Service-Management-L2-1-0 | sechost.dll | documented for Windows 8 | |
| API-MS-WIN-Service-winsvc-L1-1-0 | sechost.dll |
All the functions in one set, namely API-MS-Win-Core-UMS-L1-1-0, are particular to x64 builds. The corresponding DLL is not supplied with 32-bit Windows and the set stops being defined for x86 builds in version 6.2.