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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I AGREE !! Installed update and Sound went bonkers. Multiple devices installed by update in Bluetooth. In addition

My PDF Software ceased to function from MS Office 365. Menu creation broken. Am getting sick and tired of MS fouling up my computer through updates. Am to the point where I do not need these issues. Maybe it is time to move away from Winbroken....

In Windows 10 Bob, just Click Start then Get Help.
Wired & Retired Old Mig15 pilot
The European Commission will carry out a full-scale probe into Google's takeover of Fitbit's health data for ad targeting.

This update was such a hassle for me, I had to do a clean install of Windows... 

I have been on the phone with Microsoft technical support for hours now (they have been VERY helpful!). This mostly boiled down to a problem with drivers, and all the error codes I was getting from the BSOD were all driver related (so I was told by the helpful technician). Instead of me trying to update any driver, it was less time and hassle to do a clean reinstall of Windows, but quite a hassle none the less.

I would like to report that after doing a clean reinstall, downloading some key programs, countless restarts, it seems my computer is operating properly now. BUT, I still have hours of adjusting and reinstallations to do... All because of this Windows update! Albeit this was an optional update, so often it is asked 'Did you download the latest updates?'. This time around, it was a big mistake to keep things so up-to-date.

For me things went from bad to worse, and then greatly improved once I did a clean reinstall of Windows. This isn't my advice to others, I just want to document how much of a bad situation this was for me. Try taking care of driver updates first, but if you find issues persist, consider a clean reinstall (it may end up being less of a headache in the end!)... Best of luck to all!


Oh geez... That sounds pretty bad. 

I have gone through hours of talking to MS Technical Support (they were very helpful). These are all driver based issues and going through all the individual drivers to update them may find a solution, but it is more likely it could not find a solution. I found one driver after another were coming up as issues, so instead of fixing so many individual driver issues, I just did a clean reinstall of Windows. 

I know it is not the news you want to hear, sorry... Overall, it ends up being the solution that takes the least time with the least headaches. This is the path I went down, and my computer is operating as it should now. BUT, I have hours of adjustments and reinstallations to do. 

Best of luck with your rig.

Yes. Contact the techs at the Windows Community (the Microsoft Community consists of users with varying degrees of expertise....not Microsoft Technicians.



For the first time since I have bought my computer, the boot sequence failed and I got the bios recovery window. I can't ignore the fact that I have updated the computer yesterday when shutting down. I seems I could finally start but I will remove this update -just in case of-
as i figured MS disabled the drivers. good news i applied this fix and it worked. did not have to re-install windows...whew!

the update also disabled the IEEE 1394 drivers had to do a fix and install legacy drivers for that. This is what caused the readyboost to reset.


People having issues is caused by bad drivers. 

Using apprived DCH drivers is the way to go for a stable system. 

This update took away the generic pnp monitor and now has 'digital flat panel, 640x480'. I am on a surface pro. Any suggestions on how to fix it?

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Last updated August 13, 2020 Views 18,521 Applies to: