Recent Blog ArticlesNewest TopicsMost LikesTagged:TagHardware Lab Kit API Updates and New Unreferenced File Check in February Refresh What’s Changing? The refreshed Windows Hardware Lab Kit (HLK) available starting February 2026 for Windows 11, version 25H2, Windows Server 2025, and Windows 11, version 24H2 will introduce a ne...HLK February Refresh Release for Windows 11 Version 25H2 and Windows Server 2025 Microsoft is pleased to announce that a refreshed HLK for Windows 11, version 25H2 and Windows Server 2025 is available starting February 17, 2026. See below for detailed information on what’s new...Attention: HDC is changing the policy on signing unreferenced files in driver packages Today, HDC signs all files contained in a submitted driver package (.cab/HLKx), regardless of whether they are referenced by the INF. With the upcoming change, any files in a submitted package that...Driver Isolation Ruleset Changes for WHCP and Attestation Submissions In November, Hardware Dev Center enforced stricter driver isolation requirements using the existing InfVerif /h validation. While InfVerif /h is already in use across WHCP and Attestation workflows, ...HLK July Refresh Release for Windows 11 Version 24H2 and Windows Server 2025 Microsoft is pleased to announce that a refreshed HLK for Windows 11, version 24H2 and Windows Server 2025 is available starting July 8, 2025. This release of the HLK contains only infrastructure c...HLK July Refresh Release for Windows 11 Version 24H2 and Windows Server 2025 Microsoft is pleased to announce that a refreshed HLK for Windows 11, version 24H2 and Windows Server 2025 is available starting July 8, 2025. This release of the HLK contains only infrastructure c...Action Required: HLK Submission Packager Changes Coming in July The Hardware Lab Kit (HLK) packaging component is important for reading, writing, and packaging test results, as well as submitting drivers to the Hardware Dev Center (HDC) portal for certification a...Removal of unwanted drivers from Windows Update This blog post is intended to notify all Windows Hardware program partners that Microsoft has taken a strategic initiative to clean up legacy drivers published on Windows Update to reduce security an...End of Servicing and Retirement Plan for Device Metadata on Windows Device metadata and the Windows Metadata and Internet Services (WMIS) are being retired as of May 2025, and no new packages will be delivered to Windows clients via WMIS. In Partner Center, device me...Upcoming Changes to INF Validation in HDC Hardware Dev Center relies on the InfVerif tool for all driver submissions. Starting in April 2025, HDC will switch to using an updated version of InfVerif that contains new validation checks for sub...
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