CU KB5006738 Windows 10 21H2
CU KB5006738 Windows 10 21H2

Microsoft update Windows 10 21H2 1904x.1319 is available for download.

It was released to insiders in the Release Preview Channel. The update brings your build number up to Windows 10 19044.1319, Windows 10 19043.1319, Windows 10 19042.1319, and Windows 10 19041.1319.

Feature update KB5006738

Changed or Fixed in CU KB5006738 Windows 10

  • We fixed an issue that prevents you from accessing the pre-provisioning page during the out-of-box experience (OOBE). This issue occurs when the credentials page for signing in to Azure Active Directory appears, and you press the Windows key five times.
  • We added a feature that facilitates certain cross-browser data transfers.
  • We fixed 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.
  • We fixed an issue in which the use of App-V intermittently causes black screens to appear when signing in on the credentials page.
  • We fixed an issue that might prevent subtitles from displaying for certain video apps and streaming video sites.
  • We fixed an issue that prevents Windows 10 virtual private network (VPN) users from connecting to Windows Server 2019 Routing and Remote Access service (RRAS) servers.
  • We fixed an issue that prevents Software-Defined Networking (SDN) virtual machines from working when you configure the Generic Routing Encapsulation (GRE) VPN bandwidth limitation.
  • We fixed 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.
  • We fixed an issue that causes Windows to go into BitLocker recovery after a servicing update.
  • We fixed 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.
  • We fixed an issue in Code Integrity that might cause a memory leak.
  • We enhanced Microsoft Defender for Endpoint’s ability to identify and intercept ransomware and advanced attacks.
  • We fixed an issue in the OOBE that might cause Windows AutoPilot provisioning to fail.
  • We fixed an issue that prevents Kana input mode users from inserting a question mark (?) using the Shift-0 key combination.
  • We fixed an issue that sometimes causes the lock screen to appear black if you enable slideshow.
  • We fixed a reliability issue with LogonUI.exe, which affects the rendering of the network status text on the credentials screen.
  • We fixed an issue that causes Server Message Block (SMB) Query Directory Requests to fail when the buffer size is large.
  • We fixed 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.
  • We fixed an issue with the virtual machine (VM) Load Balancing feature, which ignores a site’s fault domain.

Install the SSU Update first.