LeagueClient.exe - Entry Point Not Found

Tried to play League today and this popped up. "LeagueClient.exe - Entry Point Not Found" "The procedure entry point ucrtbase.abort could not be located in the dynamic link library api-ms-win-crt-runtime-l1-1-0.dll" I've tried uninstalling and reinstalling the game, troubleshooting, and running it as an administrator. Nothing seems to work. Anyone have any idea whats going on? How to fix it? Anything?
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