[2020] Riot games launcher not updating says "Process already running"

Hello, sorry you ran into this issue.

If you are still running into this issue can you please go to the game website, download the game installer from the website and run the installer. Make sure that you've closed the "process is already running" window before running the installer. Our team updated the game installers last night and players have confirmed that this fixed the issue.

If it doesn't fix the issue let me know and I can try to work with you to resolve it.