Streaming then all the sudden when i restart...

So ye, i was streaming today then all the sudden no one of my friends could rejoin me on my lobby despite i was on the horizon life session… then all the sudden when i decided to restart the game, windows itself ( or microsoft or whatever ) decided to remove my StreamlabsOBS and stopped my stream in middle of everything when i restarted Forza horizon 4 after hours of streaming… so then i thought restarting the PC would fix it the issues but guess out, the game was removed of my PC too… never happened to me before since day one of ultimate edition release of the game… so what kinda of situation is this? anyone that can give me some help or tips ? coz this is so sad that happened in the middle of my streaming too …