SmbServerNameHardeningLevel Workaround (KB3161561)
KB3161561 is causing issues with file sharing. This script changes some registry entries that resolves the problem.
Sets the SmbServerNameHardeningLevel registry entry to 0. For more information about how to configure the SmbServerNameHardeningLevel entry, see the “Workarounds” section of Microsoft Security Bulletin MS15-083.
See June’s Patch Blog for more details.