Cumulative updates - April 14 2020

This is a summary of the cumulative updates released on April 14th 2020.

  1. Windows 10 1903 and 1909 - KB4549951, Build No. 18362.778 and 18363.778
  2. Windows 10 1809- KB4549949, OS build 17763.1058*

Direct Download links

  • KB4549951 32-bit update can be downloaded using this link and 64-bit can be downloaded from this.
  • KB4549949 32-bit link is here and the 64-bit link is here.

Servicing Stack Updates

It is recommended to install Servicing stack updates before installing the cumulative updates. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates

  • For Windows 10 1903/1909, use this link for 32-bit and this link for 64-bit download(KB4552152)
  • For Windows 10 1809, use this link for 32-bit and this link for 64-bit download.(KB4549947)

Known Issues

Symptom Workaround
After installing KB4493509, devices with some Asian language packs installed may receive the error, "0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND."
  1. Uninstall and reinstall any recently added language packs. For instructions, see Manage the input and display language settings in Windows 10.
  2. Select Check for Updates and install the April 2019 Cumulative Update. For instructions, see Update Windows 10.

Note If reinstalling the language pack does not mitigate the issue, reset your PC as follows:

  1. Go to the Settings app > Recovery.
  2. Select Get Started under the Reset this PC recovery option.
  3. Select Keep my Files.

Microsoft is working on a resolution and will provide an update in an upcoming release.

There are no known issues for KB4549951. 

Known issues in this update

Symptom Workaround
We have seen social media reports related to KB4549951 that mention Bluetooth, a stop error with a blue screen, and other related issues.

To date, we have not seen these issues reflected in telemetry, support data, or customer feedback channels. We continuously investigate all customer feedback and are closely monitoring this situation.

Note If you experience any issues, we'd like to know. Please provide feedback using the keyboard shortcut Windows + F or go to the Start menu and select Feedback Hub so that we can investigate.

Windows 10 update history

Windows 10 release dashboard

Windows 10 message center

Follow @WindowsUpdate to find out when new content is published to the release information dashboard.

*Revised end of service date for Windows 10, version 1809


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this update has broken my pc completely. other than getting chrome to open not much else will. I cant even open the start menu nor the search bar. and am greeted with the following via screenshot whenever I try to open my regularly used programs. 

WIth the start menu and search bar no longer working I can't even roll back the update so now im just stuck like this. great job MIcrosoft, you really **** over alot of people who have to work from home due to covid.

See my response to Sumit. I followed his advice and downloaded mediacreator from his link and ran that to fix mine completely by reinstalling windows 10 latest version. All your files, apps etc should not be affected but ensure you have a back up at hand.

Thanks for the new update.
Also had the same issue.
need windows 10

You likely aren't missing any updates for the version you are using as reinstalling that would have given you the latest version OF it or, at least, triggered automatic update to offer them for 1809.

You might care to make use of the Update Assistant when installing future updates as that will check your device for any KNOWN conflicts prior to an install and indicate actions to take if such conflicts are detected.

You can download it from just be sure you run the update assistant once you have it downloaded, You will find a shortcut on your desktop that looks like this:  also it will be available in "All Programs" under "W" for Windows 10 Update Assistant.

Select "Update Now" in photo above to install the Assistant.

 kb4549951 fails with (0x80070057)

HP Notebook V2G94EA#ABU

Microsoft Windows version 1909 (OS Build 18363.693)

Before this issue all updates were always successful first time.

Have performed the following.

1.  Ran all items as prompted via Windows Help

     Including but not limted to running each step in script ResetWUEng

2.  Performed a Reset this PC.

3.  Performed a complete rebuild using HP recovery media as when first bought PC.  Building to the OS details above.

After each stage had same problems kb4549951 fails with (0x80070057)

Therefore have reached the point were I can not trying anything else.  Now waiting for Windows 20H1.

Any suggestions welcome.

Further Note

Found this website

Downloaded Microsoft Tool wushowhide select KB4549951 to hide.  Now windows update reporting uptodate,  no errors.  I know that KB4549951 is not installed but its clean now.

I opened my laptop today and it booted to the install windows page even though I have windows already installed and none of the troubleshooting functions are working. I believe it is because of the update

Cassandra, thank you for  that. If that works then that is the most useful bit of information I've had in years thank you. I probably won't be able to look into it in depth for a few days, I've volunteered to go back to Fire & Rescue during present crisis. But I will report back. If there are any "help" links you've come across that would be useful. 

There are about 4 CU's Ive missed for 1809  1 in Feb and 2 or 3 in March.

Thanks again


I have my updates "paused" for as long as possible.  The problem is, Microsoft's crappy, Octobre 2018 update broke my ability to do back-ups on my computer.  Oh, and it also broke my touch screen, so that does not work anymore, and the program no longer exists on my computer.  I have had to get creative in terms of how to save my files.  For a January 2020 update decide it would be cute and funny to move files around, delete desktop files I had, etc, and I had to go hunting for them on my hard drive, and retrieve them.  I am FINISHED with Windows 10, and will try and put this one off as long as possible.  For it is clear that whomever has been writing these updates the last few years does not know what in the hell they are doing, nor do they care.
I have been without the use of my computer since the latest Windows 10 update occurred for me on the night of April 15, 2020. It made my computer totally unusable. The only thing I was able to get after signing in on Thursday morning was the blue screen of death. The computer would not boot up and it would not go into safe mode. I could not get it to do anything. Believe me, I wasted many hours trying when I could have been working. Of all times for this to happen, it had to happen when most people are trying to work from home. I was preparing to have to purchase a new computer. I did a system restore and that did not fix it. I did a computer reset on April 17, 2020 and that finally got my computer back where I could use it again. But of course, I lost all of my apps and programs that I had added when I did the reset so now I can waste a lot more time trying to get back everything I lost from loading the Windows 10 update. I am very angry and disappointed with Microsoft right now for the extra stress and anxiety this has caused. 

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Discussion Info

Last updated October 5, 2020 Views 31,185 Applies to: