KB5075899: DNS over HTTPS (DoH) support for Windows DNS Server is now available in public preview
Windows Server 2025Microsoft
February 10, 2026—KB5075899 (OS Build 26100.32370)
Improvements
This security update contains fixes and quality improvements from KB5073379 (released January 13, 2026), KB5077793 (released January 17, 2026), and KB5078135 (released January 24, 2026). The following summary outlines key issues addressed by this update. Also, included are available new features. The bold text within the brackets indicates the item or area of the change.
- [File Explorer] Fixed: This update addresses an issue where folder renaming with desktop.ini files in File Explorer isn't work correctly. The LocalizedResourceName setting is ignored, so custom folder names don't appear.
- [Fonts & Display] Updates the Chinese fonts to support the GB18030‑2022A standard for character coverage and display.
- [Graphics] Fixed: This update addresses an issue where certain GPU configurations might recently have experienced a system error related to dxgmms2.sys, resulting in the KERNEL_SECURITY_CHECK_FAILURE error.
- [Performance & Reliability] Fixed: This update disables the forwarded I/O feature in the NVMe stack by default.
[Networking]
- New! DNS over HTTPS (DoH) support for Windows DNS Server is now available in public preview. This preview enables evaluation of DoH for traffic between the server and its clients. This is intended for feedback only. It isn’t supported for production use, and it might contain issues. Functionality might also change, including potential breaking changes, before General Availability (GA). You can read more about this preview in the DoH on Windows DNS Server blog.
- New! Windows Server now supports random shuffling of resource records in DNS Server responses. This helps reduce scenarios where a single resource record becomes overloaded because it appears first in the returned list.
To enable, create a DWORD registry key named “RandomShuffle” at:
Registry Key:
Computer\\\\HKEY_LOCAL_MACHINE\\\\SYSTEM\\\\CurrentControlSet\\\\Services\\\\DNS\\\\Parameters
Data to be set: 1
To disable or erase the key:
Date to be set to: 0
