September 24, 2019—KB4516061 (OS Build 14393.3242)

Applies to: Windows 10 Version 1607Windows Server 2016


  • Updates an issue that causes File Explorer to stop working when you personalize the desktop by changing the theme, the background image, and so on.

Improvements and fixes

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

  • Addresses an issue that displays a black screen when you initiate a Remote Desktop Protocol (RDP) session. 
  • Addresses an issue that causes File Explorer to stop working when you personalize the desktop by changing the theme, the background image, and so on.
  • Addresses an issue that delays a user’s logon when one or more services operates from an account that is not a built-in account. For example, the account may be a service account that is part of a domain or is local to the machine. The duration of the logon delay increases by the number of services that match this criterion.
  • Changes the default setting for BitLocker when encrypting a self-encrypting hard drive. Now, the default is to use software encryption for newly encrypted drives. For existing drives, the type of encryption will not change. 
  • Addresses an issue that prevents a web browser from connecting securely to Windows Server. This occurs when using a client authentication certificate, such as a SHA512-based certificate, and the web browser does not support a signature algorithm that matches the certificate. 
  • Addresses an issue that may cause authentication to fail for certificate-based authentication when the certificate authentication includes a cname as part of the pre-authentication request. 
  • Addresses an issue that chooses a SHA-1 hash algorithm for the secure (HTTPS/TLS) connection to a Windows server. 
  • Addresses an issue that may cause the Local Security Authority Subsystem Service (LSASS) to stop working with an “0xc0000005” error. 
  • Addresses an issue that causes the lsass.exe service to stop working, which causes the system to shut down. This occurs when migrating Data Protection API (DPAPI) credentials using dpapimig.exe with the -domain option.  
  • Addresses an issue with LdapPermissiveModify requests, which fail to make Active Directory (AD) group membership changes if the Lightweight Directory Access Protocol (LDAP) client uses the Security Identifier (SID) syntax. In this scenario, Active Directory returns a “SUCCESS” status even though the change did not occur. 
  • Addresses an issue that fails to apply changes in the %HOMESHARE% path to the folder redirection configuration. As a result, folder redirection for a known folder does not work. 
  • Addresses an issue that may cause a file server to stop working and may result in data loss. This issue occurs when you enable File Server Resource Manager (FSRM) quota on a file server and a disk disconnects unexpectedly.
  • Addresses an issue with the Origin request header behavior in Internet Explorer when you make cross-origin resource sharing (CORS) requests that use redirected resources in internal subnets.
  • Addresses an issue in which netcfg fails to install the Azure Virtual Filtering Platform (VFP) driver correctly.
  • Addresses an issue that may cause a Hyper-V virtual machine and a Hyper-V host to lose network connectivity because of an inconsistency in the media access control (MAC) address learning process. As a result, the Hyper-V virtual switch drops packets.
  • Addresses an issue that causes Windows virtual machines to randomly stop responding because of a page fault that occurs while disabling the paging device (PerformanceCounterInstanceName).

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.

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.
The print spooler service may intermittently have issues completing a print job and may result in a print job being canceled or failing. Some apps may close or generate errors when the print spooler fails and you may receive a remote procedure call error (RPC error) from some printing utility or printing apps.

This issue is resolved in KB4524152.

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 (KB4512574) 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 4516061