Extreme Injector relies on specific runtime libraries to execute its code and communicate with Windows DLLs. Missing or outdated libraries are a frequent root cause of crashes.
This seems obvious, but simply right-clicking isn't always enough.
If kernel32.dll itself is damaged, you can fix it using Windows' built-in repair tool: Open as Administrator. Type sfc /scannow and press Enter. Restart your computer once the process finishes. Common "Top" Fixes from the Community: