| File name | Version level | Notes |
|-----------|---------------|-------|
| api-ms-win-core-memory-l1-1-0.dll | Windows 7 | Earliest API Set |
| l1-1-1 to l1-1-5 | Intermediate | Minor updates |
| l1-1-6.dll | Current | Adds VirtualAlloc2, MapViewOfFile3? No — those are in l1-1-8. 1-1-6 is still widely used |
Since this API set is native to Windows 10 and 11, running Windows Update will ensure all API Set forwarders are present and registered. api-ms-win-core-memory-l1-1-6.dll
A: No. Despite the “memory” in the filename, the error is purely software-related. It has nothing to do with physical RAM health. | File name | Version level | Notes
In modern versions of Windows (starting with Windows 8), Microsoft introduced a virtualization layer for system DLLs. Instead of programs calling kernel32.dll or ntdll.dll directly, many system calls are routed through API Sets—a series of small, forward-compatible DLL stubs. Since this API set is native to Windows
The naming convention follows a pattern:
Corrupt system files can cause this error.
Use dumpbin /dependents yourapp.exe from a Developer Command Prompt. If you see api-ms-win-core-memory-l1-1-6.dll listed, your app requires that forwarder.
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