Xpee. I am running windows 10. I did have Windows defender turned off. I also run AVG as my anti-virus, I had to turn that off as well. Once everything was off I made sure I was completely logged out of Facebook Gamecenter, it runs in the background so make sure you completely exit out of it. Then I restarted it and launched SWC and it automatically updated. I Restarted my PC to make sure everything was enable again and it has been working since. So make sure you complete exit FB GC (Check by the click under hidden icons to see if it is still running) Hope that helps more.