api-ms-win-core-memory-l1-1-6.dll is part of the Windows API Set. It acts as a connector that redirects programs to the actual code inside Windows system files (like kernel32.dll or kernelbase.dll).
If you download it from a third-party site:
If SFC fails, run:
DISM /Online /Cleanup-Image /RestoreHealth
Go to Settings > Windows Update and install the latest updates. Microsoft regularly includes API set updates.
Download the official packages from Microsoft’s website:
This often restores missing API set DLLs.
