Geoff Chappell, Software Analyst
All functions in the API-MS-Win-Core-Fibers-L1-1-0 set are documented exports from KERNEL32 in version 5.2 and higher:
The implementations in KERNEL32 version 6.1 and higher are just stubs which transfer the handling to wherever the schema redirects the API Set.
Non-trivial implementations of all functions in this API Set are exported from KERNELBASE version 6.1 and higher.
The Windows 7 schema redirects this API Set to KERNELBASE. Thus: