Windows 10 Mobile Windows phones get an operating system update before the end

Brad Stephenson

Windows 10 Mobile on Lumia 950

Windows phone handsets running Windows 10 Mobile received an operating system update today. Referred to as the May 14, 2019—KB4500154 Update, this update brings the Windows 10 Mobile operating system to build number 15254.566.

Given that support for Windows 10 Mobile is essentially stopping at the end of the year, this update doesn’t bring any exciting new features or added functionality to the niche product but it does contain several security and big fixes.

Here’s the full release notes:

  • Provides protections against a new subclass of speculative execution side-channel vulnerabilities, known as Microarchitectural Data Sampling, for 64-Bit (x64) versions of Windows (CVE-2019-11091, CVE-2018-12126, CVE-2018-12127, CVE-2018-12130). Use the registry settings as described in the Windows Client article. (These registry settings are enabled by default for Windows Client OS editions).
  • Adds “” into the HTTP Strict Transport Security Top Level Domains (HSTS TLD) for Internet Explorer and Microsoft Edge.
  • Addresses an issue that may cause “Error 1309” while installing or uninstalling certain types of .msi and .msp files on a virtual drive.
  • Addresses an issue that prevents the Microsoft Visual Studio Simulator from starting.
  • Addresses an issue that may cause the text, layout, or cell size to become narrower or wider than expected in Microsoft Excel when using the MS UI Gothic or MS PGothic fonts.
  • Security updates to Internet Explorer, Microsoft Scripting Engine, Microsoft Edge, Windows Storage and Filesystems, Microsoft Graphics Component, Windows App Platform and Frameworks, Windows Cryptography, Windows Datacenter Networking, Windows Server, Windows Virtualization, Windows Kernel, and the Microsoft JET Database Engine.

Microsoft may not be officially ending support for their Windows phones until the end of the year but a variety of apps have already begun to end support for the devices. The Windows 10 Mobile Instagram app was retired last month and the several MSN apps on the platform can no longer be installed.

There have been a lot of rumors, leaks, and even kinda-sorta confirmation to suggest that Microsoft is working on a follow-up mobile device but right now it’s unclear when or if the product will ever be released.

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