October 15, 2019—KB4519979 (OS Build 14393.3300)

Reminder The additional servicing for Windows 10 Enterprise, Education, and IoT Enterprise editions ended on April 9, 2019 and doesn't extend beyond this date. To continue receiving security and quality updates, Microsoft recommends updating to the latest version of Windows 10.

Reminder March 12 and April 9 were the last two Delta updates for Windows 10, version 1607. For Long-Term Servicing Branch (LTSB) customers, security and quality updates will continue to be available via the express and full cumulative update packages. For more information on this change please visit our blog.

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.

IMPORTANTWindows 10 Enterprise and Windows 10 Education editions will receive additional servicing at no cost until April 9, 2019. 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.

For more information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article.

Highlights

Updates an issue that may cause a tablet’s screen to rotate unexpectedly.
Updates an issue that causes a system to stop working during the Windows upgrade process.

Improvements and fixes

This non-security update includes quality improvements. Key changes include:

Updates time zone information for Norfolk Island, Australia.
Updates time zone information for the Fiji Islands.
Addresses an issue that may cause a tablet’s screen to rotate unexpectedly.
Addresses an issue that may cause an application window to flicker when running the application using RemoteApp. Additionally, DWM.exe may stop working on the session host.
Addresses an issue that prevents Computer objects from being added to local groups using the Group Policy Preference “Local Users and Groups”. The Group Policy Editor returns the error message, “The object selected does not match the type of destination source. Select again.”
Addresses an issue that causes a query request of the Win32_LogonSession class for the StartTime to display the value of the epoch (for example, 1-1-1601 1:00:00) instead of the actual logon time.
Addresses an issue that prevents an App-V application from opening and displays a network failure error. This issue occurs under certain circumstances, such as when a system's battery is low or there is an unexpected power failure.
Addresses an issue in which Microsoft AppLocker may prevent an application from running or log a false positive error instead of running the application.
Addresses an issue that fails to include the full file hash as part of the Event Log entry during auditing events for Windows Defender Application Control (WDAC).
Addresses an issue that causes a system to stop working during the Windows upgrade process. The Stop error “SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e)” appears in the Transmission Control Protocol/Internet Protocol (TCPIP).
Addresses an issue that prevents netdom.exe from displaying the new ticket-granting ticket (TGT) delegation bit for the display or query mode.
Addresses an issue that causes high CPU usage when retrieving session objects.
Addresses an issue that causes applications that utilize change notifications on named pipes to have a kernel mode memory leak of input and output (I/O) Request Packet (IRP) objects.
Addresses an issue that causes Windows to become unresponsive when software attempts to interact with the mount manager while the mount manager is performing certain operations.
Addresses an issue that might cause error 0x1E, 0xA, or 0x50 to occur during a block cloning operation on an Resilient File System (ReFS) volume because of a race condition.
Addresses an intermittent issue in Active Directory Federation Services (AD FS) that fails to authenticate users. Additionally, AD FS redirects the browser back to the Microsoft Exchange Client Access services (CAS) with the wrong Audience uniform resource identifier (URI). Specifically, AD FS appends a slash to the Audience URI. Users see an error page and cannot access the Outlook Web App (OWA).
Addresses an issue with Lightweight Directory Access Protocol (LDAP) queries that have a “memberof” expression in the filter. The queries fail with the error, “000020E6: SvcErr: DSID-0314072D, problem 5012 (DIR_ERROR), data 8996”.
Addresses an issue with evaluating the compatibility status of the Windows ecosystem to help ensure application and device compatibility for all updates to Windows.
Addresses an issue that prevents users from reducing the size of a window in some cases.
Addresses an issue with a race condition between the volume mount process (within fileinfo.sys) and the deregistration of filter notifications that causes the operating system to stop working on certain virtual machines. The error code is “0x7E.”
Addresses an issue in which files that are stored in a Cluster Shared Volume (CSV) with an alternate data stream are still present after you try to delete them. You may also receive an "access is denied" message on the next try to access or delete the files.

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

Symptom

Workaround

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.

Certain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.

Do one of the following:

Perform the operation from a process that has administrator privilege.
Perform the operation from a node that doesn’t have CSV ownership.

Microsoft is working on a resolution 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.

If you are using Windows Update, the latest SSU (KB4521858) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

Install this update

Release Channel	Available	Next Step
Windows Update or Microsoft Update	Yes	Go to Settings > Update & Security > Windows Update and select Check for updates.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)	No	You can import this update into WSUS manually. See the Microsoft Update Catalog for instructions.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4519979.

October 15, 2019—KB4519979 (OS Build 14393.3300)

Highlights

Improvements and fixes

Known issues in this update

How to get this update

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