When you fail to open a program or a file on your Windows computer, and you ’re seeing this error The program can’t start becauseapi-ms-win-crt-runtime-l1-1-0.dll is missing from your computer. Try reinstalling the program to fix this problem, it could be super frustrating. Let’s look at how to fix this issue ,sage error the program can’t start because api ms win crt runtime l1 1-0 dll is missing.