Microsoft Releases Windows 10 Cumulative Update (KB4478877) for Version 1607

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Dec 5
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Microsoft has released a cumulative update for Windows 10 Anniversary Update to deliver a fix to the users on the LTSC (Long-Term Servicing Channel) a week ahead of the scheduled Patch Tuesday updates. Since version 1607 reached the end of service on April 10, 2018, those on Home or Pro editions won’t receive this update. The latest Windows 10 cumulative update is only available to those on Enterprise and Education editions.

The latest Windows 10 cumulative update (KB4478877) brings the following fix:

windows-10-2019-19h1Related Brand New Windows 10 19H1 Build Brings Updated File Explorer Icon, Console Improvements & More

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.

The update can be manually downloaded from Microsoft Update Catalog or through  Settings > Update & Security > Windows Update > Check for updates.

Windows 10 known issues that are yet to be resolved:

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.

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