Download KB4100403 Cumulative Update For Windows 10 Version 1803 May 2018


Microsoft has released the second cumulative update KB4100403 for Windows 10 April 2018 Update in May. The first update is KB4103721. After installing this update, the build number of Windows will become 10.0.17134.81.

You can check for your current Windows version and build by going to Run –> winver.

Installing Windows Update KB4100403 in Windows 10 Version 1803

Installing Windows Update in Windows 10 Version 1803

It seems that Microsoft has pushed this update in a hurry because a lot of issues that need to be fixed in Windows 10 Version 1803 are still not fixed in this update.


There are only 6 fixes included in this update. Here’s the list:

  • Fixed an issue with web worker issue in Internet Explorer
  • Fixed time zone issue which was also fixed in the latest updates for Version 1709 and Version 1703.
  • Fixed an issue with Microsoft Edge and other applications hanging when creating a new audio endpoint or starting video playback.
  • Fixed Windows Hello enrollment issue with dGPUs.
  • Fixed a power issue where Windows was causing major battery drains on systems with NVMe devices.
  • Fixed an issue where closed-caption settings are preserved after upgrade.

Known issues after installing KB4100403 update

Microsoft has listed two known issues which are not fixed in this update. Both the issues are related to hard drive compatibility. Windows 10 Version 1803 is still not compatible with Intel SSD Pro 600p and Toshiba XG4, XG5 and BG3.

If you are using these hard drives, you are advised not to upgrade to Version 1803 until Microsoft provides a solution to this problem.

TIP: Also see RDP authentication error solution if you are using Windows Remote Desktop services.

How to get KB4100403 update for Windows 10 Version 1803

There are two ways to get this update, either you can get it through Windows Update or you can download and install it manually.

To download and install this update through Windows Update, please go to Settings –> Update & Security –> Windows Update and select Check for updates.

If the update doesn’t show in Windows Update then you can download KB4100403 from below given links and run the installers for installing the update.

Download KB4100403 cumulative update for Windows 10 Version 1803 64-bit [427 MB]

Download KB4100403 cumulative update for Windows 10 Version 1803 32-bit [205 MB]

Download KB4100403 cumulative update for Windows 10 Version 1803 ARM-64 based systems [474 MB]

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  1. John Maguire on

    Having major issues with this update.After installing i cant boot into windows.all I get is a continues blue circle on my screen.Staying well away from this update untill its fixed.All i could do was boot into safe mode and do a system restore.

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