Api-ms-win-core-memory-l1-1-6.dll Missing
Encountering the “api-ms-win-core-memory-l1-1-6.dll is missing” error can be frustrating, especially when you’re in the middle of an important task. This guide provides seven proven methods to permanently resolve this DLL error, with step-by-step instructions for every Windows user, from beginners to advanced.
The api-ms-win-core-memory-l1-1-6.dll file is a critical system component associated with the Windows API (Application Programming Interface). Specifically, it belongs to the Windows App Runtime and the Universal C Runtime (UCRT) . Its primary role is to manage memory operations—allocation, deallocation, and paging—for modern applications, especially those built with newer versions of Visual Studio (2015, 2017, 2019, or 2022).
When this file goes missing or becomes corrupted, Windows applications or games (like Fortnite, Call of Duty, or Adobe Creative Cloud apps) will fail to launch, displaying a cryptic error message. api-ms-win-core-memory-l1-1-6.dll missing
Sometimes the UCRT is included with newer Visual C++ runtimes.
No – and doing so is dangerous.
Because this is not a real DLL but an API-set redirection, manually placing the file in System32 or the app folder will not work. The error will persist, and you risk: Encountering the “api-ms-win-core-memory-l1-1-6
🛑 Never download this DLL from any website. No official Microsoft distribution exists for it separately.
If the above fails, your Windows might be too outdated. Sometimes the UCRT is included with newer Visual
Before fixing the problem, it helps to understand the mechanics behind it. The filename can be broken down to reveal its function:
The "ApiSet" Architecture:
Unlike standard DLLs (Dynamic Link Libraries) that contain large chunks of code, api-ms-win-core-memory-l1-1-6.dll is likely an ApiSet Schema DLL. Introduced in Windows to reduce dependency issues, these files act as redirection maps. When a program asks for a memory function, this DLL redirects the request to the actual logical code inside the Windows kernel.
Why does the error occur? Because this file is a system component, it is not usually meant to be "installed" by a user. If a program asks for it and cannot find it, it usually means:
You see "api-ms-win-core-memory-l1-1-6.dll is missing" because: