May 19, 2019 - KB4505056 (OS Build 17763.504)
Applies to: Windows 10 version 1809, Windows Server 2019 all versions
Improvements and fixes
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.
If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.
Windows Update Improvements
Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.
Known issues in this update
Symptom |
Workaround |
After installing this update, there may be issues using the Preboot Execution Environment (PXE) to start a device from a Windows Deployment Services (WDS) server configured to use Variable Window Extension. This may cause the connection to the WDS server to terminate prematurely while downloading the image. This issue does not affect clients or devices that are not using Variable Window Extension. |
To mitigate the issue, disable the Variable Window Extension on WDS server using one of the following options:
Option 1:
Open an Administrator Command prompt and type the following:
Wdsutil /Set-TransportServer /EnableTftpVariableWindowExtension:No
Option 2:
Use the Windows Deployment Services UI.
- Open Windows Deployment Services from Windows Administrative Tools.
- Expand Servers and right-click a WDS server.
- Open its properties and clear the Enable Variable Window Extension box on the TFTP tab.
Option 3:
Set the following registry value to 0:
“HKLM\System\CurrentControlSet\Services\WDSServer\Providers\WDSTFTP\EnableVariableWindowExtension”.
Restart the WDSServer service after disabling the Variable Window Extension.
Microsoft is working on a resolution and will provide an update in an upcoming release. |
Certain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege. |
Do one of the following:
- Perform the operation from a process that has administrator privilege.
- Perform the operation from a node that doesn’t have CSV ownership.
Microsoft is working on a resolution and will provide an update in an upcoming release. |
When attempting to print from Microsoft Edge or other Universal Windows Platform (UWP) applications, you may receive the error, "Your printer has experienced an unexpected configuration problem. 0x80070007e." |
You can use another browser, such as Internet Explorer to print your documents.
Microsoft is working on a resolution and will provide an update in an upcoming release. |
After installing KB4493509, devices with some Asian language packs installed may receive the error, "0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND." |
- Uninstall and reinstall any recently added language packs. For instructions, see Manage the input and display language settings in Windows 10.
- 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:
- Go to the Settings app > Recovery.
- Select Get Started under the Reset this PC recovery option.
- Select Keep my Files.
Microsoft is working on a resolution and will provide an update in an upcoming release. |
How to get this update
Before installing this update
Prerequisite: The servicing stack update (SSU) (
KB4499728) must be installed before installing the latest cumulative update (LCU). The LCU will not be reported as applicable until the SSU is installed. For more information, see
Servicing stack updates.
If you are using Windows Update, the latest SSU (
KB4499728) 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
- UK customers : This update will be applied automatically to resolve this issue. You may be required to restart your device again. If you are affected by this issue, Check for updates to apply the update immediately.
- Customers outside of the UK: This update will not be applied automatically. If you are affected by this issue, we recommend that you apply this update from Windows Update and then restart your device.
To download and install this update, go to
Settings > Update & Security > Windows Update and select
Check for updates.
To get the standalone package for this update, go to the
Microsoft Update Catalog website.