KB4497934

• Allows users to go back to a host browser from a Windows Defender Application Guard (WDAG) container.

• Addresses an issue with looping redirects between Microsoft Edge and Internet Explorer 11.

• Updates wininet.dll to prevent the re-creation of File Transfer Protocol (FTP) control sessions.

• Addresses an issue that may cause Microsoft Edge to hide annotations added to a PDF file, such as inked notes, highlights, and comments.

• Addresses an issue that removes UserRights policies from all users in a security group when you remove a device from a mobile device management (MDM) server or Microsoft Intune deletes a UserRights policy.

• Addresses an issue that disconnects a remote desktop session when you lock the session using a third-party credential provider.

• Addresses an issue that causes Microsoft Office and other applications to prompt for a password after you change a user account password. This issue occurs on hybrid Azure Active Directory (AD) joined systems.

• Addresses an issue that prevents ActiveX controls from automatically installing through a proxy server.

• Addresses an issue that prevents you from signing in to a Microsoft Surface Hub device with an Azure Active Directory account. This issue occurs because the previous sign-out did not complete successfully.

• Addresses an issue that causes a sign-in to fail with the error, “Incorrect Username or password” when using an empty or null password and Windows Defender Credential Guard is enabled.

• Addresses an issue that may cause a temporary KRB_AP_ERR_MODIFIED Kerberos sign-in failure in applications and services configured to use a Group Managed Service Account (GMSA). This issue occurs after the automatic update of the service account password.

• Addresses an issue that may prevent BitLocker from encrypting data drives when the "Enforce drive encryption on fixed data drives" Group Policy is configured.

• Addresses an issue that prevents updates from downloading from a Windows Server Update Services (WSUS) server when a Windows Defender Application Control policy is set to manage which updates can be deployed.

• Addresses an issue that may cause event 7600 in the Domain Name System (DNS) server event log to contain an unreadable server name.

• Addresses an issue that fails to record a local user’s last logon time even when the user has accessed the server’s network share.

• Addresses an issue that prevents NumLock from working properly in a Remote Assistance session when the Remote Assistance window gains and loses focus.

• Updates time zone information for Morocco.

• Updates time zone information for the Palestinian Authority.

• Addresses an issue with the International Components for Unicode (ICU) data, which were not updated for the time zone and the new Japanese Era.

• Addresses an issue with the "Allow uninstallation of language features when a language is uninstalled." Group Policy.

• Addresses an issue in which a File Share Witness does not remove Server Message Block (SMB) handles, which causes a server to eventually stop accepting SMB connections.

• Addresses an issue in which Windows attempts to renew Azure Active Directory (AAD) token certificates when there is no internet connectivity. This issue occurs during AAD authentication and slows the performance of applications.

• Addresses an issue with scrollLeft in Internet Explorer.

• Addresses an issue that causes rendering to stop working for <svg> elements.

• Addresses an issue with Assigned Access deployments (formerly Kiosk Mode) that prevents a user from logging on to an Assigned Access profile. This affects all locales and occurs when the local administrator’s group is not named using the English spelling of “Administrators”. In the Event Viewer, Event 31000 shows the source as “Microsoft-Windows-AssignedAccess/Admin” and displays the error message, “The group used to assign the application can’t be found.”

• Addresses an issue that prevents a Generation 2 virtual machine from starting on a Windows Server 2019 Hyper-V host. In the Microsoft-Windows-Hyper-V-Worker-Admin event log, Event ID 18560 displays, “VM name was reset because an unrecoverable error occurred on a virtual processor that caused a triple fault.”

• Addresses an issue with a system that has pre-start kernel Direct Memory Access (DMA) Protection enabled. When you start Windows in safe mode, a blue screen appears with the error, “DRIVER_VERIFIER_DMA_VIOLATION”.

• Addresses an issue that may cause screen sharing to fail in Skype, Skype for Business, and Microsoft Teams. This occurs because of a port conflict with the reserved port range on devices that have enabled the Hyper-V role.

• Addresses an issue that causes a delay when loading many unsigned Domain Name System (DNS) zones related to the Domain Name System Security Extensions (DNSSEC) feature. This issue occurs after configuring the following registry setting:

  Path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters

  Setting: EnableFastLoadUnsignedZones

  Type: DWORD

  Value: A value of 1 enables the feature. A value of 0 disables the feature.

  Restart the operating system or the DNS server after changing the registry values.