Are you using Windows 10 1909

This is how optional updates for Windows 10 arrive in version 1909, 1903 and 1809, or what is the same, November 2019 Update, May 2019 Update and October 2018 Update, in this case with extended support due to the COVID19 crisis. Being optional means that users decide if they want to install them or not, through Windows Update, to avoid possible failures that could ruin the user experience

Windows 10 version 1909 and 1903

For computers that are still using Windows 10 version 1909 or Windows 10 1903, Microsoft has released patch KB4577062 under build 18363.1110 and 18362.1110 , respectively (you can download them here). Builds arriving with the following enhancements:

Adds a notice in Internet Explorer 11 informing users about the end of support for Adobe Flash in December 2020.
Fixes a bug that causes certain applications to enter an unwanted repair cycle. As a result, a user cannot use that application during that time.
Fixes an issue that may display 4K High Dynamic Range (HDR) content darker than expected when you configure certain non-HDR systems for HDR broadcast.
Fixes an issue to reduce the likelihood of missing fonts.
Addresses an issue that causes a device to stop responding after a pen has been in use for several hours.
Reduces distortions and aberrations in Windows Mixed Reality head-mounted displays (HMDs).

Fixed an issue with Microsoft Edge IE mode that occurs when you enable Configure Enhanced Crash Detection for the mode Internet Explorer in Microsoft Edge.
"Fixed an issue that, in certain scenarios, causes applications to stop working if created with Visual Basic for Applications (VBA). The error is Class not registered."
Fixed an issue where could display a blank black screen when a device was connected to a Windows virtual desktop machine ( WVD).
Fixed an issue that causes a Stop error when initialization of the graphics adapter fails.
Fixes an issue that does not recognize the first East Asian language character typed in a Microsoft Foundation Class Library (MFC) DataGrid.
Fixed an issue where the Forgot PIN selection within Settings > Accounts > Sign-in options>fails in a Windows Hello implementationfor on-site businesses."
Fixes an issue that causes File Explorer to quit unexpectedly when using a Ribbon shell extension under specific circumstances.
Fixed an issue affecting default app associations during certain update scenarios. This can cause numerous toast notifications to appear when you log in for the first time after the update.

Fixed an issue that produces a No features to install message when adding a feature, even if you provide administrative credentials. "
Fixes an issue that causes a Stop error when using the Microsoft Surface Slim Pen on certain editions of the Microsoft Surface Pro X or Microsoft Surface Laptop 3.
Updates 2021 time zone information for Fiji.
Fixed an issue where causing random line breaks when redirecting PowerShell console error output.
Fixes an issue with HTML report creation using tracerpt.
Allows DeviceHe althMonitoring Cloud Service Plan (CSP) to run on Windows 10 Business and Windows 10 Pro editions.
Fixed an issue that prevents the contents of HKLM \ Software \ Cryptography from being transferred during Windows feature updates.
Fixes an issue that displays an error that indicating that a card PIN change was unsuccessful even though the PIN change was successful.
Fixed an issue that could create duplicate external security home directory objects for authenticated and interactive users in the domain partition. As a result, the original directory objects have CNF>"
Fixes an issue that prevents you from enabling BitLocker after installing the Server Core Application Compatibility On Demand (FOD) feature.
Fixed an issue that causes an access violation in lsass.exe when a process is started with the runas command on some circumstances.
Fixes an issue where Windows Defender Application Control enforces package family name rules that should only be audited.
Fixed an issue, which occurs after an update, that causes devices that have Dynamic Root of Trust for Measurement (DRTM) enabled to reboot unexpectedly during hibernation.
Update Windows Hello face recognition settings to work well with 940nm wavelength cameras.

This update ensures that new Windows Mixed Reality HMDs meet the minimum specification requirements and have a default refresh rate of 90 Hz.
Addresses an issue that causes a Stop error on a Hyper-V host when a virtual machine (VM) issues a specific Small Computer System Interface (SCSI) command.
Fixes an issue that prevents Always On VPN (AOVPN) from automatically reconnecting when resuming from sleep or hibernation .
Adds an Azure Active Directory (AAD) device token that is sent to Windows Update (WU) as part of each WU scan. WU can use this token to query membership in groups that have an AAD device ID.
"Fixes an issue that fails to log 5136 events for group membership changes in certain scenarios. This occurs when you use the Permissive Modify control; for example, the Active Directory (AD) PowerShell modules use this control."
Fixes an issue with the Microsoft Cluster Shared Volume File System (CSVFS) driver that prevents Win32 API access to SQL Server file stream data. This occurs when data is stored on a cluster shared volume on a SQL Server Failover Cluster Instance, which is located on an Azure VM.

Fixes an issue that causes a deadlock when offline files are enabled. As a result, CscEnpDereferenceEntryInternal holds parent and child locks.
Fixes an issue that causes deduplication jobs to fail with stop error 0x50 when calling HsmpRecallFreeCachedExtents.
Fixes an issue that causes applications to stop working when using the Microsoft Remote Desktop Sharing APIs. The breakpoint exception code is 0x80000003.
Suppresses the HTTP call to www.microsoft.com made by the Remote Desktop Client (mstsc.exe) on logoff when a remote desktop gateway is used.
Adds support for certain new Windows Mixed Reality motion controllers.
Fixes an issue with evaluating Windows ecosystem compatibility status to help ensure application and device compatibility for all Windows updates.
Fixes an issue with the group policy setting Restrict delegation of credentials to remote servers>"

WINDOWS 10 VERSION 1809

For those computers based on Windows 10 version 1809, Microsoft releases build 17763.1490 with patch KB4577069, which you can download from this link, an update that comes providing the following improvements and new features:

Added a notification to Internet Explorer 11 informing users about the end of support for Adobe Flash in December 2020.
Fixes an issue to reduce the likelihood of missing fonts.
Fixes an issue that causes applications to quit unexpectedly when a user enters East Asian characters after changing the keyboard layout.
Fixes an issue that causes Microsoft Office applications to quit unexpectedly when using a Korean input method editor (IME ).
Fixes an issue with using Group Policy preferences to set the home page in Internet Explorer.
Fixes an issue with Microsoft Edge IE mode that occurs when you enable Configure Enhanced Crash Detection for Internet Explorer Mode in Microsoft Edge.

Fixes an issue that could cause the error ”0x80704006.Hmmmm… I can't access this page” when using Microsoft Edge Legacy. This problem occurs when you try to access websites on non-standard ports. Any website that uses a port listed in the Fetch Standard specification under bad ports or port blocking can cause this problem.
Fixes an issue where no display on the screen for 5 minutes or more during Remote Desktop Protocol (RDP) session .
"Fixes an issue that, in certain scenarios, causes applications to stop workingv if created with Visual Basic for Applications (VBA). The error is Class not registered."
Fixed an issue that could display a blank black screen when a device was connected to a Windows Virtual Desktop (WVD) machine.
Fixes an issue that causes Cortana to stop working on multi-user devices when installing, uninstalling, and reinstalling the same update.
Fixes an issue that causes a stop error when initialization of the graphics adapter fails.
Fixes an issue to reduce the likelihood of missing fonts.
Fixes an issue that displays a black screen momentarily when an application calls the Desktop Window Manager (DWM) thumbnail API.
Addresses an issue that does not recognize the first East Asian language character typed in a Microsoft Foundation Class Library (MFC) DataGrid.
Fixes an issue that causes File Explorer to quit unexpectedly when using a Ribbon shell extension under specific circumstances.

Fixes an issue that results in a No features to install message when you add a feature, even if you provide administrative credentials. "
Provides the ability to set a group policy that displays only the domain and username when you log in.
Fixes an issue affecting default application associations during certain update scenarios. This can cause numerous toast notifications to appear when you log in for the first time after the update.
Fixes an issue that causes applications to quit unexpectedly when a user enters East Asian characters after changing the keyboard layout .
Updates 2021 time zone information for Fiji.
Fixes an issue that affects the ability of Microsoft System Center Operations Manager (SCOM) to monitor a client's workload.
Fixes a performance issue that occurs when PowerShell reads the registry to check if the ScriptBlockLogging registry key is in the registry.
Fixes an issue with creating HTML reports using tracerpt.
Fixes an issue that causes an access violation in lsass.exe when a process is started with the runas command under some circumstances.
Addresses an issue that prevents the contents of HKLM \ Software \ Cryptography from being transferred during Windows feature updates.
Fixes an issue that prevents you from enabling BitLocker after installing the Server Core Application Compatibility On Demand (FOD) feature.
Fixed an issue that could create duplicate external security home directory objects for authenticated and interactive users in the domain partition. As a result, the original directory objects have CNF>" "
Fixes an issue that prevents a call to NCryptGetProperty() from returning the correct pbOutput value when pszProperty is set to Algorithm Group>"

Fixed an issue where Windows Defender Application Control applies package family name rules that should only be be audited.
Fixes an issue where the WinHTTP AutoProxy service does not adhere to the value set for the maximum time to live (TTL) in the proxy auto configuration (PAC) file. This prevents the cached file from being updated dynamically.
Addresses an issue that could redirect Software Load Balancing (SLB) traffic to a different host when that traffic goes through a multiplexer. This causes the connection to an application to fail.
Added new functionality to the robocopy command.
Adds Secure Sockets Layer (SSL) certificate authentication over HTTP / 2.
Addresses an issue that prevents Always On VPN (AOVPN) from automatically reconnecting when resuming from standby or hibernation.
Fixed an issue that causes Microsoft Office applications to quit unexpectedly when using a Korean Input Method Editor (IME).
Adds an Azure Active Directory device token (AAD) that is sent to Windows Update (WU) as part of every scan from WU. WU can use this token to query membership in groups that have an AAD device ID.
"Fixed an issue that failed to log 5136 events for group membership changes in certain scenarios. This occurs when you use the Permissive Modify control; for example, the Active Directory (AD) PowerShell modules use this control."
Fixes an issue that causes a deadlock when offline files are enabled. As a result, CscEnpDereferenceEntryInternal holds parent and child locks.
Fixes an issue that causes deduplication jobs to fail with stop error 0x50 when calling HsmpRecallFreeCachedExtents().
Suppresses the HTTP call to www.microsoft.com made by the Remote Desktop client (mstsc.exe) on logoff when using a Remote Desktop Gateway.
Fixed an issue with Windows ecosystem compatibility status assessment to help ensure app and device compatibility for all Windows updates.
"Fixed an issue with the Restrict delegation of credentials to remote servers group policy setting with the Restrict delegation of credentials mode on the RDP client. As a result, the Terminal Service tries to use Require Remote Credential Guard mode first and will only use Require Restricted Administrator if the server does not support Require Remote Credential Guard."

Known Issues

In this build, Microsoft claims a problem that still persists and that is that after installing KB4493509, devices with some packages of Installed Asian languages may receive error 0x800f0982 - PSFX E MATCHING COMPONENT NOT_FOUND. They give several solutions to the problem:"

Uninstall and reinstall any recently added language packs. For instructions, see Manage input and display language settings in Windows 10.
Select Check for updates and install the April 2019 cumulative update. For instructions, see Update Windows 10.

If reinstalling the language pack does not mitigate the problem, you should restart your PC as follows: