KB5006738 Fixes Printing and Memory Leaks Issues on Windows 10

After a recent security patch update on Windows 10, several users were facing Printer or Memory Leak issues on their devices. The tech giant developers worked upon these two and several other pending bugs and released an optional update “KB5006738” containing fixes to the above problems. 

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Installing this non-security update will upgrade your Windows 10 PC to OS Build 1904x.1320. In the above build number, you may find an “x”. Well, this can be anything between 1, 2, or 3 and denotes version 2004, 20H2, and 21H1.


KB5006738 Changelog

The key changes on this cumulative update are as follows –

  • Resolves a bug inside Code Integrity that might cause a memory leak.

  • Works upon a known issue that might prevent the successful installation of printers using the Internet Printing Protocol (IPP).

  • Addresses an issue with the virtual machine (VM) Load Balancing feature, which ignores a site’s fault domain.

  • Brings a feature that facilitates certain cross-browser data transfers.

  • Enhances Microsoft Defender for Endpoint’s ability to identify and intercept ransomware and advanced attacks.

  • Resolves an issue that prevents users from accessing the pre-provisioning page during the out-of-box experience (OOBE). This bug occurs only when the credentials page for signing into Azure Directory appears, and you press the Windows key five times.

  • KB5006738 Fixes an issue in the OOBE that might cause Windows AutoPilot provisioning to fail.

  • Resolves an issue that sometimes causes the lock screen to appear black when you set up a slideshow.

  • Fixes an issue in which the use of App-V intermittently causes black screens to appear when signing in on the credentials page.

  • Works upon an issue that might prevent subtitles from displaying for certain video apps and streaming video sites.

  • Fixes an issue with Assigned Access kiosks that are configured with Microsoft Edge as a kiosk application. These kiosks might sometimes fail to restart Microsoft Edge if users close the browser window.

  • Fixes an issue that prevents Kana input mode users from inserting a question mark (?) using the Shift-0 key combination.

Other Fixes and Improvements

  • Resolves an issue that prevents Windows 10 virtual private network (VPN) users from connecting to Windows Server 2019 Routing and Remote Access service (RRAS) servers.

  • Works upon an issue that prevents Software-Defined Networking (SDN) virtual machines from working when you configure the Generic Routing Encapsulation (GRE) VPN bandwidth limitation. 

  • Fixes a Primary Refresh Token (PRT) update issue that occurs when VPN users sign in using Windows Hello for Business when the VPN connection is offline. Users receive unexpected authentication prompts for online resources that are configured for user sign-in frequency (SIF) in Azure Active Directory-Conditional Access.

  • Addresses an issue that causes Windows to go into BitLocker recovery after a servicing update.

  • Resolves an issue that might cause Kerberos.dll to stop working within the Local Security Authority Subsystem Service (LSASS). This occurs when LSASS processes simultaneous Service for User (S4U) user-to-user (U2U) requests for the same client user.

  • Fixes a reliability issue with LogonUI.exe, which affects the rendering of the network status text on the credentials screen.

  • Rectifies an issue that causes Server Message Block (SMB) Query Directory Requests to fail when the buffer size is large.

  • Fixes a memory leak issue in lsass.exe on domain controllers in the forest root domain that occurs when you have multiple forests and multiple domains in each forest. The SID-Name mapping functions leak memory when a request comes from another domain in the forest and crosses forest boundaries.

How can you Get this Non-Security Patch update?

Considering so many recent updates causing several issues in Windows 10, there are users who have disabled automatic updates on their devices. If you haven’t, you will get this cumulative update automatically via Windows update. 

In case you had blocked Windows 10 updates from occurring automatically, follow these easy steps to manually download and install the available update –

  • First of all, visit Microsoft Update Catalog.
  • A list of all recent patches will appear on the site above. 
  • Pick the one that matches your system architecture, and hit Download
  • Moving ahead, click the top link. This will start downloading the chosen file into your PC.
  • Once the download completes, double-click on the setup file.
  • Your Windows 10 PC is now upgraded to OS Build 1904x.1320. 

Known Issues on this update

Till the time of writing this article, there are no new issues that we faced on this non-security patch update. The issues that might occur are appearing since long back and Microsoft has provided some resolutions to them as well. Here’s a list of commonly occurring issues after installing KB5006738 on Windows 10. 

  • Removed Microsoft Edge Legacy.
  • After installing this update, connecting to devices in an untrusted domain using Remote Desktop, connections might fail to authenticate when using smart card authentication.

Release Note

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