Windows 10 V1607: Update KB4480977 (01/17/2019)

[German]Microsoft has released the night (17.1.2019) a cumulative update KB4480977 for Windows 10 V1607 and Windows Server 2016. This is supposed to fix some bugs, but it has a whole latte of known issues.


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The information can be found in the Windows 10 Update History page. Note that support for Windows 10 version 1607 expired on April 10, 2018. Windows 10 Home and Windows 10 Pro do not get this update anymore. However, the LTSC versions are still supported until October 2026. Additionally, Microsoft has promised updates for systems with Intel “Clovertrail” chipset until January 2023.

Update KB4480977 for Windows 10 V1607

Update KB4480977 is available for the above mentioned Windows 10 V1607 variants and for Windows Server 2016. The January 17, 2019 update raises the OS build to 14393.2759 and includes the following improvements and fixes:

  • Addresses an issue in Microsoft Edge that fails to trigger the focusin event if the focus event listener of an element shifts focus to another element. 
  • Addresses an issue in which the desktop lock screen image set by a group policy will not update if the image is older than or has the same name as the previous image. 
  • Addresses a reliability issue during which File Explorer stops working without self-recovery after at least several days of uptime. 
  • Addresses an issue that causes BitLocker Network Unlock to fail on generation 2 virtual machines when it’s used in a network that only supports IPv4. 
  • Addresses an issue that causes catalog signed scripts, including those shipped as part of Windows, to incorrectly generate a Windows Defender Application Control (WDAC) failure audit event. 
  • Addresses boot failure issues that occur when you restart certain hyperconverged infrastructure (HCI) virtual machines. 
  • Addresses issues with taking snapshots on hyperconverged Storage Spaces Direct (S2D) cluster nodes. 
  • Addresses an issue that causes Scheduled Tasks created in a disabled state to not run. 
  • Addresses an issue that prevents volumes from going online as expected when you add back drain nodes during maintenance. 
  • Addresses an issue that prevents you from overwriting a file in a shared folder because of an Access Denied error when a filter driver is loaded.
  • Addresses an issue that may cause third-party applications to have difficulty authenticating hotspots. 
  • Addresses an issue that fails to decrement the dirty region tracking reference count when a storage repair job is running on hyperconverged Storage Spaces Direct (S2D) cluster nodes.
  • Addresses an issue that causes the PowerShell Desired State Configuration (DSC) pull server to return “ResourceNotFound (404)” after the Internet Information Services (IIS) application pool is recycled. The Application Log contains Extensible Storage Engine (ESENT) Event ID 623, which indicates that the store version is incorrect. This update adds functionality to configure the version store size to resolve this issue. For more information, see KB4487527.
  • Addresses an issue that causes RemoteApp windows to disappear and reappear intermittently on Windows Server 2016.
  • Addresses an issue that throws an exception when instantiating SqlConnection after you install the August Preview of Quality Rollup or September 11, 2018 .NET Framework update.

In addition, improvements to Windows Update are made through a direct update to improve the reliability of the Windows Update Client. The update is offered as soon as the settings are checked for updates. It is also available for download via the Microsoft Update Catalog installation requires the presence of the latest SSU (KB4465659, Microsoft Update Catalog).

Known issues …

The KB article lists a whole bunch of know issues, caused by this update. Here is a rough overview:

  • System Center Virtual Machine Manager (SCVMM) managed workloads are noticing infrastructure management issues after VMM refresh as the Windows Management Instrumentation (WMI) class around network port is being unregistered on Hyper-V hosts.
  • After installing this update on Windows Server 2016, instant search in Microsoft Outlook clients fail with the error, “Outlook cannot perform the search”.
  • After installing KB4467691, Windows may fail to startup on certain Lenovo laptops that have less than 8 GB of RAM.
  • After changing file association defaults, some icons in the taskbar appear incorrectly.
  • Applications that use a Microsoft Jet database with the Microsoft Access 97 file format may fail to open if the database has column names greater than 32 characters. The database will fail to open with the error, “Unrecognized Database Format”.

Some of these known issues were already mentioned in the previous update or were discussed in separate articles here within my blog. Microsoft suggests various workarounds for the isses, which are described in the kb articles.


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Patchday Windows 10-Updates (January 8, 2019)
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Fix for the Windows 7 SMB network bug caused by Update KB4480970/KB4480960
January 2019 patchday issues
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