F-secure Server Security 11.01 prevents installing KB3000850
I have couple of servers which had difficulties installing KB3000850. I left one running over night, and in the morning it was still not done, tiworker process fully loading one core. I stopped F-secure services for a moment, and installation completed. Could be coinsidence, but I think F-secure services had something to do with this. I'm running 2012R2 servers.