Microsoft Releases Update KB4100403 for Windows 10 1803

Microsoft this week rolled out a new cumulative update for Windows 10 version 1803, aka ‘April 2018 Update’ and here’s a look at what to expect.

Microsoft this week has released new cumulative update KB4100403 for Windows 10 1083 April Update. There are no new features to report in this latest update, but it does include quality improvements and bug fixes. It will also bump your build number to 17134.81. Here is a look at what is included in this latest update.

Windows 10 1803 Cumulative Update KB4100403

Here is a list of the fixes and improvements included in this latest update:

  • Addresses an issue in Internet Explorer that might cause communication between web workers to fail in certain asynchronous scenarios with multiple visits to a web page.
  • Addresses additional issues with updated time zone information.
  • Addresses an issue where closed-caption settings are preserved after upgrade.
  • Addresses a reliability issue that may cause Microsoft Edge or other applications to stop responding when you create a new audio endpoint while audio or video playback is starting.
  • Addresses an issue that may cause Windows Hello enrollment to fail on certain hardware that has dGPUs.
  • Addresses an issue with power regression on systems with NVMe devices from certain vendors.

If you’re running 1803 you should get the update automatically within a few days, or if you want to stay on top of things head to Settings > Update & Security > Windows Update. Or, you can download the stand-alone version from Microsoft Update Catalog and manually install it. There are a few known issues with this update, so make sure to read the full developer notes for the symptoms and workarounds.

Remember, a restart will be required to complete the install process. After it is finished, and you log back in, hit the Windows Key and type: winver and hit Enter. You will see that your build number has been bumped up to 17134.81.

If you are still holding off on updating to 1803, you might want to consider still doing so. While there are fixes for some of the known hardware issues with 1803 (including SSDs), this might not be “magic” update that will fix issues so many people are experiencing – namely app and driver issues. Still, if you do go ahead with the jump, let us know how things are going and if you’re having issues, check out our Windows 10 Forums for more discussion and troubleshooting advice.

If you are still running Windows 10 Fall Creators Update, you should check out the cumulative update KB4103714 released for it earlier this week for the Fall Creators Update.



  1. Paul

    May 24, 2018 at 6:33 am

    Touch wood.only problem i have with windows 10 is every week or so my sound driver fails.i get message tjat i disconnected something when i didnt.once i restart windows its working again.
    Have an asus thats only a year and half old so hardware is compatible with windows 10

  2. Raunak

    May 24, 2018 at 7:42 am

    i got problem on my hp g62 notebook brightness stucks on max i checked for driver it already updated to latest then i re installed too but not solved

  3. Jim Shunamon

    May 24, 2018 at 12:14 pm

    Supposedly this update was supposed to fix the following issue. I’m surprised they didn’t address the issue of the extra drive letter showing up in File Explorer and saying it’s a 449 MB drive that is low on disk space. It can be hidden and the overly annoying notifications stopped, but it’s freaking out a lot of people who don’t know what it is or how to remove it from File Explorer.

  4. Larry Roberts

    May 25, 2018 at 6:19 pm

    I updated to win 10 kb4100403 (following the april update and 1 cumulative update, I was left with a black screen and circling white dots. I tried a recovery cd and various advanced options (including restore points) nothing worked!. Out of despiration I pressed F8 (didn’t think that worked anymore) and I got the option to go to safe mode then the update told me ‘unable to install reverting to previous setting!. My computer is fine now but I dare not install any further updates (you can disable updates by right clicking on This PC, then click on manage, services and applications, services and look for windows update) so I have disabled updates!.

    Windows Update shows no Update history, and I don’t think I can go back to a previous version of windows!. I clicked on ‘help’ in windows update and I quickly had text help from a microsoft rep, after some time I allowed him to take control of my computer (a strange experience) various windows and commands flashed up but it ended with the rep’ basically telling on me that microsoft was aware of the problem and was working on it!.

    Which leaves me with a computer I either can’t update or I’m afraid to update because I might be left with a computer that doesn’t work at all!.

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