We are beginning to see service issues with July 10, 2018—KB4338818 (Monthly Rollup) - Windows Server 2008 R2 Service Pack 1 and have had to remove this rollup from Windows 2008 R2 SP1 servers that are affected. Known issues https://support.microsoft.com/en-us/help/4338818/windows-7-update-kb43388…

Issues with July 10, 2018—KB4338818 (Monthly Rollup)

bma July 27, 2018, 4:14am 2

You’re probably already aware but KB4338821 was released shortly after this post.