Sims 4 won't install or update.

Hi

Im not sure if this has been talked about before, but im lost.

I played the Sims yesterday, and shut down for the night, had antivirus etc on (subscriptions run out) but sims still worked. 

Now I go to play it today, and I get this message. I can't find anywhere on my security to add an exclusion, and if it worked last night, then surely it would work today with the security. 

Does anyone know how to fix this? Or do I need to reinstall the Sims 4 and start again?

Thanks