Windows 10, version 1607, reached end of service on April 10, 2018. Devices running Windows 10 Home or Pro editions will no longer receive monthly security and quality updates that contain protection from the latest security threats. To continue receiving security and quality updates, Microsoft recommends updating to the latest version of Windows 10.
IMPORTANT: Windows 10 Enterprise and Windows 10 Education editions will receive six months of additional servicing at no cost. Devices on the Long-Term Servicing Channels (LTSC) will continue to receive updates until October 2026 per the Lifecycle Policy page. Windows 10 Anniversary Update (v. 1607) devices running the Intel “Clovertrail” chipset will continue to receive updates until January 2023 per the Microsoft Community blog.
Windows Server 2016 Standard edition, Nano Server installation option and Windows Server 2016 Datacenter edition, Nano Server installation option reached end of service on October 9, 2018. These editions will no longer receive monthly security and quality updates that contain protection from the latest security threats. To continue receiving security and quality updates, Microsoft recommends updating to the latest version of Windows 10.
Windows 10 Mobile, version 1607, reached end of service on October 8, 2018. Devices running Windows 10 Mobile and Windows 10 Mobile Enterprise will no longer receive monthly security and quality updates that contain protection from the latest security threats. To continue receiving security and quality updates, Microsoft recommends updating to the latest version of Windows 10.
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 prevents the release of the on-demand Source Network Address Translation (SNAT) port allocated to a virtual machine (VM) after the SNAT port is no longer in use. As a result, the SNAT port becomes exhausted.
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
After you install the August Preview of Quality Rollup or September 11, 2018 .NET Framework update, instantiation of SqlConnection can throw an exception. For more information about this issue, see the following article in the Microsoft Knowledge Base:
4470809 SqlConnection instantiation exception on .NET 4.6 and later after August-September 2018 .NET Framework updates.
|This issue is resolved in KB4480977.|
After installing this update, users may not be able to use the Seek Bar in Windows Media Player when playing specific files. This issue does not affect normal playback.
|This issue is resolved in KB4471321.|
|When features related to end-user-defined characters (EUDC) are used, the entire system may become unresponsive.|| |
This issue is resolved in KB4471321.
|After installing this update on Windows Server 2016, instant search in Microsoft Outlook clients fail with the error, "Outlook cannot perform the search".|| |
This issue is resolved in KB4487026.
|After installing KB4467684, the cluster service may fail to start with the error “2245 (NERR_PasswordTooShort)” if the Group Policy “Minimum Password Length” is configured with greater than 14 characters.|| |
Set the domain default "Minimum Password Length" policy to less than or equal to 14 characters.
Microsoft is working on a resolution and will provide an update in an upcoming release.
For hosts managed by System Center Virtual Machine Manager (SCVMM), SCVMM cannot enumerate and manage logical switches deployed on the host after installing the update.Additionally, if you do not follow the best practices, a stop error may occur in vfpext.sys on the hosts.
|After installing KB4467691, Windows may fail to startup on certain Lenovo laptops that have less than 8 GB of RAM.|| |
Restart the affected machine using the Unified Extensible Firmware Interface (UEFI). Disable Secure Boot and then restart.
If BitLocker is enabled on your machine, you may have to go through BitLocker recovery after Secure Boot has been disabled.Microsoft is working with Lenovo and will provide an update in an upcoming release.
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. For more information, see Servicing stack updates.
Install this update
To download and install this update, go to Settings > Update & Security > Windows Update and select Check for updates.
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
For a list of the files that are provided in this update, download the file information for cumulative update 4478877.