Update for Windows 10, version 1903: May 19, 2019

Applies to: Windows 10, version 1903

Summary


This update includes quality improvements. Key changes include:

  • Addresses an issue that may prevent access to some gov.uk websites that don’t support HTTP Strict Transport Security (HSTS) when using Internet Explorer 11 or Microsoft Edge.
  • Addresses an issue in which installation may fail with the error, "0x800f081f - CBS_E_SOURCE_MISSING."

 

Known issues in this update


Symptom Workaround

After installing this update, users may experience error “0x800705b4” when launching Windows Defender Application Guard or Windows Sandbox.

Use the credentials of a local admin to create and set the following registry keys on the Host OS then restart the Host:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Containers\CmService\Policy]

"DisableClone"=dword:00000001

"DisableSnapshot"=dword:00000001

Windows Sandbox may fail to start with "ERROR_FILE_NOT_FOUND (0x80070002)" on devices in which the operating system language is changed during the update process when installing Windows 10, version 1903. This issue is resolved in KB4512941.

How to get this update


Before installing this update

Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For more information, see Servicing stack updates.

If you are using Windows Update, the latest SSU (KB4500109) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog

Install this update

This update will be downloaded and installed automatically from Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4505057

More information


Prerequisites 

There are no prerequisites for installing this update.

Restart information 

You will have to restart your computer after you apply this update.

Update replacement information 

This update replaces the previously released update 4497936.

References


Learn about the terminology that Microsoft uses to describe software updates.