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Microsoft releases even more Windows 10 cumulative updates with tons of fixes

Just yesterday, Microsoft released new cumulative updates for all supported versions of Windows 10, although only with security fixes for Internet Explorer. Just a day later, all-new updates are being released, and they're quite a bit more extensive. Moreover, these are actually available via Windows Update, as yesterday's were not.

They're still optional updates though, so if you check for updates, you'll get an option to download and install them. If you choose to not take them, the fixes will be bundled into next month's mandatory Patch Tuesday updates. Today's builds are for Windows 10 versions 1809, 1803, 1709, 1703, and 1607, meaning all supported versions except for the oldest and the newest.

If you're on the Windows 10 October 2018 Update, or version 1809, you'll get KB4516077, bringing the build number to 17763.774. You can manually download it here, and these are the highlights:

  • Allows Microsoft Edge to print PDF documents that contain landscape and portrait-oriented pages together correctly.
  • Updates an issue that doesn't provide a cursor when you select a text input box using touch.
  • Updates an issue that prevents some minimized windows from being restored, closed, or maximized.
  • Updates an issue that prevents the Save and Save As options in Microsoft Office 2010 applications from working when high contrast mode is on.
  • Updates an issue with incorrect folder and file properties in File Explorer.
  • Updates an issue that causes vertical fonts to be larger when printing to a PostScript printer.
  • Updates an issue that prevents Microsoft Narrator from opening.
  • Updates an issue that occasionally prevents you from changing the display brightness after resuming from Sleep or Hibernation when using certain graphics drivers.
  • Updates an issue that causes icons in message box dialogs to appear too large when you choose scaling options in Display settings.
  • Updates an issue that may cause the Calculator app to close unexpectedly if you select any available Converter option.
  • Updates an issue that causes excessive CPU usage when you switch applications or hover over the Taskbar.
  • Updates an issue that causes a dim display after waking from Sleep.

Here's the full list of fixes:

  • Addresses an issue that prevents the discovery of remote systems associated with a user from working properly.
  • Addresses an issue that prevents Microsoft Narrator from opening when the User Account Controls setting is disabled on the Standard User account.
  • Addresses an issue to enable Microsoft Edge to print PDF documents that contain landscape and portrait-oriented pages correctly.
  • Addresses an issue that occasionally prevents users from changing the display brightness after resuming from Sleep or Hibernation when using certain graphics drivers.
  • Addresses an issue with MSCTF.dll that causes an application to stop working.
  • Addresses an issue that prevents some minimized windows from interacting, and you cannot restore, close, or maximize them when a system is running with a custom shell.
  • Addresses an issue that fails to provide a cursor when you select a text input element using touch.
  • Addresses an issue that causes icons in message box dialogs to appear too large when you choose scaling options in Display settings. For more information, see Using Dialog Boxes and Display Scaling in Windows 10.
  • Addresses an issue that prevents the Save and Save As options in Microsoft Office 2010 applications from working when high contrast mode is on.
  • Addresses an issue that causes File Explorer to report the number or the size of files and folders incorrectly when they use long paths.
  • Addresses an issue that causes unnecessary restart requests on servers.
  • Addresses an issue with diagnostic data processing during the Windows Out of Box Experience (OOBE) sequence.
  • Configures Windows 10 Enterprise for Virtual Desktops (EVD) editions in Azure Active Directory (Azure AD) licensing mode by default. Users who connect to EVD editions must have an EVD license.
  • 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 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 the Local Security Authority Subsystem Service (LSASS) to stop working with an “0xc0000005” error.
  • Addresses an issue that prevents the BitLocker recovery key from being successfully backed up to Azure Active Directory.
  • Addresses an issue that leads to excessive memory utilization in Microsoft Defender Advanced Threat Protection (ATP).
  • Addresses a possible compatibility issue when Microsoft Defender Advanced Threat Protection (ATP) accesses case-sensitive Server Message Block (SMB) shares.
  • Addresses a rare issue that occurs when the mssecflt.sys driver takes too much space on the kernel stack. This results in the error, "STOP 0x7F: UNEXPECTED_KERNEL_MODE_TRAP", and Parameter 1 is set to “EXCEPTION_DOUBLE_FAULT.”
  • Improves the detection accuracy of Microsoft Defender ATP Threat & Vulnerability Management.
  • Addresses an issue that gives a Windows Hello for Business user two certificates for authentication during certificate renewal instead of one certificate.
  • 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 that may cause Direct Access servers to use a large amount of non-paged pool memory (pooltag: NDnd).
  • Addresses an issue that causes vertical fonts to be larger when printing to a PostScript printer.
  • Addresses an issue that prevents Windows from sending a shutdown notification to a Non-Volatile Memory Express (NVMe) drive when the driver unloads using Disable Device in Device Manager.
  • Addresses an issue that prevents you from running the Active Directory Diagnostics Data Collector Set from the Performance Monitor for Domain Controllers. This causes the Data Collector Set name to appear empty. Running the Active Directory Diagnostics Data Collector Set returns the error, “The system cannot find the file specified.” Event ID 1023 is logged with the source as Perflib and the following messages:
    • “Windows cannot load the extensible counter DLL “C:\Windows\system32\ntdsperf.dll.”
    • “The specified module could not be found.”
  • Addresses an issue in GetFinalPathNameByHandleW() that prevents Favorites from opening in Internet Explorer 11. This occurs when Favorites are redirected and offline in a client-side caching scenario with enhanced protected mode compatibility (EPM) enabled.
  • Addresses an issue in which the product description of Windows Server 2019 was incorrect when queried using slmgr /dlv.
  • 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 a Lightweight Directory Access Protocol (LDAP) runtime issue for Domain Controller Locator-style LDAP requests. The error is, “Error retrieving RootDSE attributes, data 8, v4563.”
  • Addresses an issue that causes LDAP queries that contain LDAP_MATCHING_RULE_IN_CHAIN (memberof:1.2.840.113556.1.4.1941) to intermittently fail on Windows Server 2019 domain controllers. However, these queries do not fail on domain controllers running previous versions of Windows Server.
  • Addresses an issue that causes group membership changes in Active Directory groups to fail. This occurs if the Lightweight Directory Access Protocol (LDAP) client uses the Security Identifier (SID) Distinguished Name (DN) syntax after installing previous versions of NTDSAI.DLL. In this scenario, an issue with the LdapPermissiveModify (LDAP_SERVER_PERMISSIVE_MODIFY_OID) control causes Active Directory to incorrectly return a “SUCCESS” status even though the group membership change did not occur.
  • Addresses an issue in which the Set-AdfsSslCertificate script is successful. However, it throws an exception during resource cleanup because the target server-side endpoint is no longer there.
  • Addresses an issue that causes File Explorer to show a regular file icon for files marked with FILE_ATTRIBUTE_OFFLINE instead of the expected placeholder icon.
  • Addresses an issue that may cause the Calculator app to close unexpectedly if you select any available Converter option.
  • Addresses an issue that causes excessive central processing unit (CPU) usage when users switch applications or hover over the Taskbar.
  • Addresses an issue with applications and scripts that call the NetQueryDisplayInformation API or the WinNT provider equivalent. They may fail to return results after the first page of data, often 50 or 100 entries. When requesting additional pages, you may receive the error, “1359: an internal error occurred.” This solution also resolves this issue for all the updates on or before June 18, 2019.
  • 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 that causes the display’s maximum brightness to appear as 50% or less after completing the out-of-box experience (OOBE) and then waking from Sleep.
  • Allows auditing of security events for clients managed by mobile device management (MDM) for security monitoring and incident response activities.
  • Addresses an issue that prevents Microsoft App-V from handling a parameter of the CreateProcess API properly, which prevents the virtual process from opening.

There are also a bunch of known issues to be aware of:

Symptom Workaround
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.
After installing KB4493509, devices with some Asian language packs installed may receive the error, "0x800f0982 - PSFX_E_MATCHING_COMPONENT_NOT_FOUND."
  1. Uninstall and reinstall any recently added language packs. For instructions, see Manage the input and display language settings in Windows 10.
  2. Select Check for Updates and install the April 2019 Cumulative Update. For instructions, see Update Windows 10.

Note If reinstalling the language pack does not mitigate the issue, reset your PC as follows:

  1. Go to the Settings app > Recovery.
  2. Select Get Started under the Reset this PC recovery option.
  3. Select Keep my Files.

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

We are investigating reports that a small number of devices may startup to a black screen during the first logon after installing updates.

To mitigate this issue, press Ctrl+Alt+Delete, then select the Power button in the lower right corner of the screen and select Restart. Your device should now restart normally.

We are working on a resolution and will provide an update in an upcoming release.

After installing this update, Windows Mixed Reality Portal users may intermittently receive a “15-5” error code. In some cases, Windows Mixed Reality Portal may report that the headset is sleeping and pressing “Wake up” may appear to produce no action.

To mitigate the issue, use the following steps:

  1. Close the Windows Mixed Reality Portal, if it is running.
  2. Open Task Manager by selecting the Start button and typing “task manager”.
  3. In Task Manager, under the Processes tab, right-click Windows Explorer and select Restart.
  4. Open the Windows Mixed Reality Portal.

We are working on a resolution and will provide an update in an upcoming release.

Some Input Method Editor (IME) may become unresponsive or may have high CPU usage. Affected IMEs include Chinese Simplified (ChsIME.EXE) and Chinese Traditional (ChtIME.EXE) with Changjie/Quick keyboard.

Due to security related changes in this update, this issue may occur when the Touch Keyboard and Handwriting Panel Service is not configured to its default startup type of Manual. To resolve the issue, perform the following steps:

  1. Select the Start button and type “services”.
  2. Open the Services app and locate Touch Keyboard and Handwriting Panel Service.
  3. Double-click Touch Keyboard and Handwriting Panel Service and select Properties.
  4. Locate Startup type: and change it to Manual.
  5. Select OK.

The TabletInputService service is now in the default configuration and IME should work as expected.


If you're on the Windows 10 April 2018 Update, or version 1803, you'll get KB4516045, bringing the build number to 17134.1039. You can manually download it here, and these are the highlights:

  • Updates an issue that may cause a browser to stop working on certain architectures.
  • Updates an issue that prevents Microsoft Narrator from opening.
  • Updates an issue that doesn't provide a cursor when you select a text input box using touch.
  • Updates an issue that causes excessive CPU usage when you switch applications or hover over the Taskbar.

Here's the full list of fixes:

  • Addresses an issue that may cause a browser to stop working on certain architectures.
  • Addresses an issue that prevents Microsoft Narrator from opening when the User Account Controls setting is disabled on the Standard User account.
  • Addresses an issue that fails to provide a cursor when you select a text input element using touch.
  • Addresses an issue with configuring a lock screen image using a Group Policy. If you have enabled AppLocker DLL rules, the image does not change. Instead, you will get a solid blue background.
  • Addresses an issue that causes excessive central processing unit (CPU) usage when users switch applications or hover over the Taskbar.
  • 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 that may not preserve changes to the access control policy when upgrading to a newer version of Windows 10.
  • 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 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 the Local Security Authority Subsystem Service (LSASS) to stop working with an “0xc0000005” error.
  • 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 the BitLocker recovery key from being successfully backed up to Azure Active Directory.
  • Addresses a possible compatibility issue when Microsoft Defender Advanced Threat Protection (ATP) accesses case-sensitive Server Message Block (SMB) shares.
  • Addresses a rare issue that occurs when the mssecflt.sys driver takes too much space on the kernel stack. This results in the error, "STOP 0x7F: UNEXPECTED_KERNEL_MODE_TRAP", and Parameter 1 is set to “EXCEPTION_DOUBLE_FAULT.”
  • Addresses an issue that leads to excessive memory utilization in Microsoft Defender Advanced Threat Protection (ATP).
  • Improves the detection accuracy of Microsoft Defender ATP Threat & Vulnerability Management.
  • Addresses an issue that gives a Windows Hello for Business user two certificates for authentication during certificate renewal instead of one certificate.
  • 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 that may give write access to a removable USB disk when a user switches from a privileged user to an unprivileged user.
  • Addresses an issue that prevents you from running the Active Directory Diagnostics Data Collector Set from the Performance Monitor for Domain Controllers. This causes the Data Collector Set name to appear empty. Running the Active Directory Diagnostics Data Collector Set returns the error, “The system cannot find the file specified.” Event ID 1023 is logged with the source as Perflib and the following messages:
    • “Windows cannot load the extensible counter DLL “C:\Windows\system32\ntdsperf.dll.”
    • “The specified module could not be found.”
  • Addresses an issue in GetFinalPathNameByHandleW() that prevents Favorites from opening in Internet Explorer 11. This occurs when Favorites are redirected and offline in a client-side caching scenario with enhanced protected mode compatibility (EPM) enabled.
  • 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.
  • Allows auditing of security events for clients managed by mobile device management (MDM) for security monitoring and incident response activities.

This one only has four known issues:

Symptom Workaround
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.
We are investigating reports that a small number of devices may startup to a black screen during the first logon after installing updates.

To mitigate this issue, press Ctrl+Alt+Delete, then select the Power button in the lower right corner of the screen and select Restart. Your device should now restart normally.

We are working on a resolution and will provide an update in an upcoming release.

After installing this update, Windows Mixed Reality Portal users may intermittently receive a “15-5” error code. In some cases, Windows Mixed Reality Portal may report that the headset is sleeping and pressing “Wake up” may appear to produce no action.

To mitigate the issue, use the following steps:

  • Close the Windows Mixed Reality Portal, if it is running.
  • Open Task Manager by selecting the Start button and typing “task manager”.
  • In Task Manager, under the Processes tab, right-click Windows Explorer and select Restart.
  • Open the Windows Mixed Reality Portal.

We are working on a resolution and will provide an update in an upcoming release.

Some Input Method Editor (IME) may become unresponsive or may have high CPU usage. Affected IMEs include Chinese Simplified (ChsIME.EXE) and Chinese Traditional (ChtIME.EXE) with Changjie/Quick keyboard.

Due to security related changes in this update, this issue may occur when the Touch Keyboard and Handwriting Panel Service is not configured to its default startup type of Manual. To resolve the issue, perform the following steps:

  • Select the Start button and type “services”.
  • Open the Services app and locate Touch Keyboard and Handwriting Panel Service.
  • Double-click Touch Keyboard and Handwriting Panel Service and select Properties.
  • Locate Startup type: and change it to Manual.
  • Select OK.

The TabletInputService service is now in the default configuration and IME should work as expected.


If you're on the Windows 10 Fall Creators Update, or version 1709, you'll get KB4516071, bringing the build number to 16299.1420. Note that this is only officially supported in Enterprise and Education SKUs. You can manually download it here, and there's one highlight:

  • Updates an issue that causes excessive CPU usage when you switch applications or hover over the Taskbar.

Here's the full list of fixes:

  • Addresses an issue that causes excessive central processing unit (CPU) usage when users switch applications or hover over the Taskbar.
  • 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 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 gives a Windows Hello for Business user two certificates for authentication during certificate renewal instead of one certificate.
  • Addresses a possible compatibility issue when Microsoft Defender Advanced Threat Protection (ATP) accesses case-sensitive Server Message Block (SMB) shares.
  • 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 a rare issue that occurs when the mssecflt.sys driver takes too much space on the kernel stack. This results in the error, "STOP 0x7F: UNEXPECTED_KERNEL_MODE_TRAP", and Parameter 1 is set to “EXCEPTION_DOUBLE_FAULT.”
  • Addresses an issue that leads to excessive memory utilization in Microsoft Defender Advanced Threat Protection (ATP).
  • 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.
  • Improves the detection accuracy of Microsoft Defender ATP Threat & Vulnerability Management.
  • Addresses an issue that causes stop error “0xc000021a” when you install a Windows update and initialize a system restoration from a restore point.
  • 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.

This update only has two known issues:

Symptom Workaround
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.
Some Input Method Editor (IME) may become unresponsive or may have high CPU usage. Affected IMEs include Chinese Simplified (ChsIME.EXE) and Chinese Traditional (ChtIME.EXE) with Changjie/Quick keyboard.

Due to security related changes in this update, this issue may occur when the Touch Keyboard and Handwriting Panel Service is not configured to its default startup type of Manual. To resolve the issue, perform the following steps:

  1. Select the Start button and type “services”.
  2. Open the Services app and locate Touch Keyboard and Handwriting Panel Service.
  3. Double-click Touch Keyboard and Handwriting Panel Service and select Properties.
  4. Locate Startup type: and change it to Manual.
  5. Select OK.

The TabletInputService service is now in the default configuration and IME should work as expected.


Those on the Windows 10 Creators Update, or version 1703, will get KB4516059, bringing the build number to 15063.2078. You can manually download it here, and there's one highlight:

  • Updates an issue in Microsoft Edge that occurs when browsing some internal websites.

Here's the full list of fixes:

  • Addresses an issue in Microsoft Edge that occurs when browsing certain internal websites.
  • 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.
  • 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 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 that causes stop error “0xc000021a” when you install a Windows update and initialize a system restoration from a restore point.
  • 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.

There's only one known issue with this one:

Symptom Workaround
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.


Finally, those on the Windows 10 Anniversary Update, or version 1607, will get KB4516061, bringing the build number to 14393.3242. Windows 10 version 1607 is only supported for LTSC and Windows Server 2016 customers. You can manually download the update here, and there's one highlight:

  • 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.

Here's the full list of fixes:

  • 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.

This one has two known issues:

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.


As mentioned earlier, you can grab today's update via Windows Update. Once you check for updates, you'll see an option to download and install it. They will not install automatically.

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