Common Problems\n\n Restart your computer to resolve problems caused by programs and services running in the background. Update your drivers and operating system to resolve any compatibility issues. Configure your security software's exception list to allow Blizzard applications to run.

They cited an increased interest for multiplayer and lack of time spent by the playerbase on the campaign mode as reasons why they shifted their focus. Black Ops 4 utilizes Blizzard's Battle platform for the Windows version instead of Steam, the first game in the series to do so.