May 14, 2024—KB5037765 (OS Build 17763.5820) - EXPIRED

Highlights 

• This update addresses an issue in that affects IE mode. It stops responding. This occurs if you press the left arrow key when an empty text box has focus and caret browsing is on.

• This update addresses a known issue that might cause your VPN connection to fail. This occurs after you install the update dated April 9, 2024, or later.

Improvements

This security update includes improvements. When you install this KB: 

• This update affects next secure record 3 (NSEC3) validation in a recursive resolver. Its limit is now 1,000 computations. One computation is equal to the validation of one label with one iteration. DNS Server Administrators can change the default number of computations. To do this, use the registry setting below.

  • Name: \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters\MaxComputationForNsec3Validation

  • Type: DWORD

  • Default: 1000

  • Max: 9600

  • Min: 1

• This update includes quarterly changes to the Windows Kernel Vulnerable Driver Blocklist file, DriverSiPolicy.p7b. It adds to the list of drivers that are at risk for Bring Your Own Vulnerable Driver (BYOVD) attacks.

• This update addresses an issue that affects Active Directory. Bind requests to IPv6 addresses fail. This occurs when the requestor is not joined to a domain. 

• This update addresses a known issue that might affect domain controllers (DC). NTLM authentication traffic might increase.

• This update addresses an issue that might affect Virtual Secure Mode (VSM) scenarios. They might fail. These scenarios include VPN, Windows Hello, Credential Guard, and Key Guard.

If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.

For more information about security vulnerabilities, please refer to the new Security Update Guide website and the May 2024 Security Updates.

Known issues in this update

How to get this update

EXPIRATION NOTICE 

IMPORTANT As of March 31, 2026, this update is no longer available from the Microsoft Update Catalog or other release channels. We recommend that you update your devices to the latest version of Windows.