July 16, 2018—KB4345420 (OS Build 16299.551)

Improvements and fixes

This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

• Addresses an issue that may cause some devices running network monitoring workloads to receive the 0xD1 Stop error because of a race condition after installing the July update.
• Addresses an issue with the DHCP Failover server that may cause enterprise clients to receive an invalid configuration when requesting a new IP address. This results in a loss of connectivity.
• Addresses an issue that may cause the restart of the SQL Server service to fail occasionally with the error, “Tcp port is already in use”.
• Addresses an issue that occurs when an administrator tries to stop the World Wide Web Publishing Service (W3SVC). The W3SVC remains in a “stopping” state, but cannot fully stop or it cannot be restarted.
  If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.

Known issues in this update

• “Cannot use ‘&’ or ‘.’ operators to invoke a module scope command across language boundaries.”
• “‘Script’ resource from ‘PSDesiredStateConfiguration’ module is not supported when Device Guard is enabled. Please use ‘Script’ resource published by PSDscResources module from PowerShell Gallery.”
  | After evaluation, Microsoft has determined that this is a low probability and a low-risk issue, and we will not provide a solution at this time for Windows 10, version 1709. If you believe that you are affected by this issue, please contact Microsoft Support.
  After you install any of the July 2018 .NET Framework Security Updates, a COM component fails to load because of “access denied,” “class not registered,” or “internal failure occurred for unknown reasons” errors. The most common failure signature is the following:Exception type: System.UnauthorizedAccessExceptionMessage: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))| This issue is resolved in KB4343897.

How to get this update

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.File informationFor a list of the files that are provided in this update, download the file information for cumulative update 4345420.