Microsoft releases KB4478877 Cumulative Update for Windows 10 v1607 & Windows Server 2016

Microsoft has released a new cumulative update for Windows 10 long-term support channels to fix network address translation ports using virtual machines.

This update is only available for LTSB 2016 Long Term Support, and you will need to upgrade to the new version if you are still using the Windows 10 Anniversary Update.

Windows 10 October Update 2018

The following are specific update logs and known issues:

  • 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.
Symptom Workaround
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.

Microsoft is working on a resolution and will provide an update in an upcoming release.
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. Microsoft is working on a resolution and estimates a solution will be available mid-December 2018.
When features related to end-user-defined characters (EUDC) are used, the entire system may become unresponsive. Double-click any font file or navigate to the font folders immediately after logging on.

Microsoft is working on a resolution and will provide an update in an upcoming release.