This update resolves the issue where local users who are part of the local “Administrators“ group may not be able to remotely access shares on Windows 7 SP1 and Windows Server 2008 R2 machines after installing the January 8th, 2019 security updates. This does not affect domain accounts in the local "Administrators" group.
Microsoft is not aware of any issues that affect this update currently.
How to get this update
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.