This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:
Improved performance on specific networks that have a high-bandwidth and low latency.
Addressed issue with users encountering a "0x000000e3" Stop error message, when trying to access a domain DFS namespace (for example, \\contoso.com\SYSVOL) on a computer that is configured to require mutual authentication (by using the UNC Hardened Access feature).
This problem may occur if the selected domain controller has security update KB3161561installed, and if the SmbServerNameHardeningLevel registry entry is configured to a non-zero value on the domain controller.
Addressed issue with MHT files not loading correctly in Internet Explorer 11.
For more info about how to get this update and a complete list of affected files, see KB3179573.