Improvements and fixes
This security update includes improvements and fixes that were a part of update KB4487016 (released February 19, 2019) and addresses the following issues:
- Addresses an issue that may cause users to receive “Error 1309” while installing or uninstalling certain types of MSI and MSP files.
- Addresses an issue with a virtual memory leak and the depletion of the paged pool with the CMNB tag that cause the server to become unresponsive.
- Security updates to Internet Explorer, Windows App Platform and Frameworks, Windows Hyper-V, Windows Storage and Filesystems, Windows Fundamentals, Windows Kernel, Windows Server, Windows MSXML, and the Microsoft JET Database Engine .
For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.
Known issues in this update
After installing this update, Internet Explorer 11 may have authentication issues. This occurs when two or more people use the same user account for multiple, concurrent login sessions on the same Windows Server machine, including Remote Desktop Protocol (RDP) and Terminal Server logons. Symptoms reported by customers include, but may not be limited to:
Create unique user accounts so that two people don’t share the same user account when logging on to a Windows Server machine. Additionally, disable multiple RDP sessions for a single user account for a specific Windows Server.Microsoft is working on a resolution and will provide an update in an upcoming release.
After installing this update, MSXML6 causes applications to stop responding if an exception was thrown during node operations, such as appendChild(), insertBefore(), and moveNode().The Group Policy editor may stop responding when editing a Group Policy Object (GPO) that contains Group Policy Preferences (GPP) for Internet Explorer 10 settings.
|Microsoft is working on a resolution and will provide an update in an upcoming release.|
|After installing this security update, Custom URI Schemes for Application Protocol handlers may not start the corresponding application for local intranet and trusted sites on Internet Explorer.|| |
Right-click the URL link to open it in a new window or tab.
Enable Protected Mode in Internet Explorer for local intranet and trusted sites.
You must restart the browser after making these changes.Microsoft is working on a resolution and will provide an update in an upcoming release.
|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:
Wdsutil /Set-TransportServer /EnableTftpVariableWindowExtension:No
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.