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Microsoft releases KB4134661 and KB4134660 for Windows 10

16 May 2018

Microsoft has finally completed the testing of the microcode updates on Windows 10 and today the company has released the Intel firmware update to all supported devices.

Microsoft is now working on a resolution that will allow the April 2018 Update on these devices in the near future.

After upgrading to the Windows 10 April 2018 Update, some users of devices with Toshiba XG4 Series, Toshiba XG5 Series, and Toshiba BG3 Series SSD drives experienced degraded battery life. The Intel microcode update is only available for Windows 10 April 2018 Update (version 1803) and Windows Server 2016 Version 1803 (Server Core).

Microsoft is working with OEM partners and Intel to identify and block devices with Intel SSD 600p Series or Intel SSD Pro 6000p Series from installing the April 2018 Update due to a known incompatibility that may cause performance and stability issues.

Lonnie_L noted that a fix for the issues is set for early June. Microsoft has yet to publish a blog post to announce what's new in this release, so in the meantime you may want to keep an eye on the Windows Insider blog for more details.

All three updates are available via Windows' automatic update installer or as separate update packages via the Microsoft Update Catalog portal.

Meanwhile, if you have one of these Toshiba drives, and you've already upgraded to the Windows 10 April 2018 Update, then subsequently noticed a drop in your battery life, you may want to revert back to the previous version of Windows 10 (Fall Creators Update).

Windows 10 KB4100347 Direct Download Links: 32-bit (x86) and 64-bit.

Microsoft releases KB4134661 and KB4134660 for Windows 10