This confirms the application was compiled with a Windows 10 SDK and expects AppModel features. If you are on Windows 10/11 and still see the error, there is a deeper SDK mismatch—recompiling the application with an older SDK or contacting the developer is the only real fix.
After updating, the API Set redirection table is refreshed, and missing references may be resolved.
If you search for api-ms-win-appmodel-unlock-l1-1-0.dll , dozens of websites will offer a free download.
The most frequent cause is a missing or corrupted Microsoft Visual C++ Redistributable package, which contains the runtime components required for many Windows applications.
Most "api-ms-win-*" errors are resolved by installing the Microsoft Visual C++ Redistributable for Visual Studio 2015-2022. api-ms-win-appmodel-state-l1-1-0.dll Error Windows 11