Optional Cumulative Updates: January 29, 2020

A new set of optional updates, KB4532695 for Windows 10 version 1903 and 1909 is available from January 29, 2020. The build number jumps to 18363.628.

As 1903 and 1909 share a common core of the OS, the update can be installed on both the releases. 

Improvements for 1903:

  • Improves the accuracy of Windows Hello face authentication. 
  • Addresses an issue with Windows Mixed Reality that occurs after upgrading to a new version of Microsoft Edge. 
  • Addresses an issue with download notifications that have multiple short-duration tabs and redirects. 
  • Addresses an issue that changes the user-customized order of tiles in the Start menu even though the layout is locked or partially locked. 
  • Addresses an issue that causes a grey box to appear when you search within Control Panel and File Explorer. 
  • Addresses an issue with a memory leak in ctfmon.exe that occurs when you refresh an application that has an editable box. 
  • Addresses a keyboard reliability issue for classic apps in the Windows Mixed Reality home. 
  • Addresses an issue that, in some instances, prevents the Language Bar from appearing when the user signs in to a new session. This occurs even though the Language Bar is configured properly. 
  • Addresses an issue that causes the touch keyboard to close when you select any key. 
  • Addresses an issue that prevents software Indirect Display drivers from being signed with more than one certificate. 
  • Addresses an issue that, in certain cases, causes multiplayer PC games to drop the invitation to play the game in multiplayer mode. 
  • Addresses an issue with unsigned program files that will not run when Windows Defender Application Control is in Audit Mode, but will allow unsigned images to run. 
  • Addresses an issue that causes the Local Security Authority Subsystem Service (LSASS) process to stop working when you sign in using an updated user principal name (UPN) (for example, changing UserN@contoso.com to User.Name@contoso.com). The error code is, “0xc0000005 (STATUS_ACCESS_VIOLATION).” 
  • Addresses an issue that sometimes causes an error when you unplug a USB type C hub flash drive. 
  • Addresses an issue with the Always On Virtual Private Network (VPN) that fails to remove the Name Resolution Policy Table (NRPT) rules after you disconnect. 
  • Addresses an issue that might cause the Print Management console to display script errors when you enable the Extended View option. 
  • Addresses an issue that causes the Windows firewall to drop network traffic from Modern apps, such as Microsoft Edge, when you connect to a corporate network using a virtual private network (VPN). 
  • Addresses an issue that displays incorrect indicators for offline and online files. 
  • Addresses an issue with ntdsutil.exe that prevents you from moving Active Directory database files. The error is, “Move file failed with source <original_full_db_path> and Destination <new_full_db_path> with error 5 (Access is denied.)” 
  • Addresses an issue in which netdom.exe fails to correctly identify trust relationships when an unconstrained delegation is explicitly enabled by adding bitmask 0x800 to the trust object. The bitmask setting is required because of security changes to the default behavior of unconstrained delegations in Windows updates released on or after July 8, 2019. For more information, see KB4490425 and trustAttributes
  • 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 might cause the Application Virtualization (App-V) Streaming Driver (appvstr.sys) to leak memory when you enable Shared Content Store (SCS) mode.
  • Addresses an issue that corrupts a log file when a storage volume is full and data is still being written to the Extensible Storage Engine Technology (ESENT) database.
  • Addresses an issue in which code refactoring breaks optimization for writing metadata, which increases Logical Volume Integrity Descriptors (LVID).

Improvements for 1909:

  • This build includes all the improvements from Windows 10, version 1903.
  • Addresses an issue that prevents File Explorer's Search Bar from pasting clipboard content using the right mouse button (right-click).
  • Addresses an issue that prevents File Explorer's Search Bar from receiving user input.


Go to Settings > Update & Security > Windows Update. In the Optional updates available area, you’ll find the link to download and install the update.

Credits: Windows 10 update history


Follow @WindowsUpdate to find out when new content is published to the release information dashboard.

To get more information about Windows Servicing, please see this blog post by John Wilcox, Windows as a Service Evangelist, Windows Servicing & Delivery


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Glad to read a positive post for a change. I have updated a 5 year old homebuild tower, a 6 year old HP tower, a 7 year old Toshiba laptop and a new Acer laptop with no problems. I do take certain precautions though.

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I downloaded this update but while it was restarting, it shows me a messege that my laptop is unable to detect AC power supply from the adapter(the adapter that came in box with laptop). Is it only me or others are facing the issue too? Is there a way I can solve the problem? I continued my bootup after that but now even though my battery isn't completely charged, as soon as I connect the charger it just shows 100% charged instantly and when I remove it, it isn't charged at all.
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@Ankur and all hitting several issues.. 

This update is an optional update and won't install by its own. It requires you go to to optional update and trigger the download or you are enrolled in the Insider program. 

I think users seeing issues probably are getting release 1909 which MS gas started to rollout to customers(See the other pinned thread).

Go to Settings>Update and Security > View your update history. Check the most recent update installed and uninstall the same. 

Via the FAQs:

We don’t recommend that you remove any installed updates. However, if you must remove an update, you can do so in update history.

Select the Start button, then select Settings > Update & Security > Windows Update > View update history > Uninstall updates.

Select the update you want to remove, then select Uninstall.

Windows Insider MVP 2018-2021 and Moderator

Dell Inspiron 5590 - i5 10210U/12GB DDR4/ 4GB Nvidia MX230/ 512GB nvme


What's wrong with 1909? Most of us installed it last year when it was released. Voilà:

As soon as i got the latest update, i keep going in these boot cycles... Just endless, telling me an error had been found... Then when Windows boots up, it eventually crashes.

I've reinstalled Windows from an ISO image, same problems. I've restored from a back up from three weeks ago, same problems. I've come realize that this new update is huge trouble.

This is crazy!

I am having issues with my Remote Desktop too, can no longer connect?

Có gì sai với 1909? Hầu hết chúng ta đã cài đặt nó vào năm ngoái khi nó được phát hành. V dầuà:

Hate to break it to you but I just installed this (as well as the NET FRAMEWORK and other updates currently being offered) and my sound is fine. So it isn't a Microsoft problem pure and simple. How about telling us the make and model of your device and we'll see what can be done to assist you.

Mine (which, as stated, is suffering from no issues from this update) is an HP Pavilion Desktop - 510-p009 PC

So what are you using? 

Dear Windows Genius who just joined the forum. Never say "So it isn't a Microsoft problem pure and simple" unless you've got developer credentials. 

If it were a Windows problem (a defective update) it would affect all users.

If it affects only SOME there is an issue with the Update and the Manufacturer of their device. Perhaps a manufacturer's update is missing. I know with my HP a BIOS Update was issued just before the release of this Microsoft Cumulative Update.

Nor do I see anything IN this update that would have affected your audio drivers in any way since that was not part of this package.


Installed update and my sound has gone. I've tried plugging in head phones and that does not work either. Does anyone know if there is a Microsoft help team I could contact? Thanks in advance, Rob

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Last updated July 26, 2020 Views 18,484 Applies to: