[Changelog] Windows 10 Mobile Build 15063.1266 available now for Creators update

This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

• Provides protections against a new speculative execution side-channel vulnerability known as L1 Terminal Fault (L1TF) that affects Intel® Core® processors and Intel® Xeon® processors (CVE-2018-3620 and CVE-2018-3646). Make sure previous OS protections against Spectre Variant 2 and Meltdown vulnerabilities are enabled using the registry settings outlined in the Windows Client guidance KB article. (These registry settings are enabled by default for Windows Client OS editions.)
• Addresses an issue that causes Internet Explorer to stop working for certain websites.
• Updates support for the draft version of the Token Binding protocol v0.16.
• Addresses an issue that causes Device Guard to block some ieframe.dll class IDs after installing the May 2018 Cumulative Update.
• Ensures that Internet Explorer and Microsoft Edge support the preload=”none” tag.
• Addresses a vulnerability related to the Export-Modulemember() function when used with a wildcard (*) and a dot-sourcing script. After installing this update, existing modules on devices that have Device Guard enabled will intentionally fail. The exception error is “This module uses the dot-source operator while exporting functions using wildcard characters, and this is disallowed when the system is under application verification enforcement”. For more information, see https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8200 and https://aka.ms/PSModuleFunctionExport.
• Security updates to Windows Server.

If you installed earlier updates, only the new fixes in this package will be downloaded and installed on your device.