Microsoft is pleased to announce that a refreshed Hardware Lab Kit (HLK) for Windows 11, version 25H2 is available starting May 12, 2026. This refreshed version replaces the previous version on the H...

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...

  The HLK Team is making some updates to how waivers are tracked internally. This will not have any effect on the submission process at a high-level; filters will be published/downloaded in the sam...

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...

Building on the recent WIP Blog post, we’re releasing WHCP and HLK for Windows 11, version 26H1 to support partners working on engineering efforts. This release is focused on enabling new platforms...

As part of our ongoing commitment to transparency and ecosystem readiness, we are sharing the Windows Hardware Compatibility Program (WHCP) and Hardware Lab Kit (HLK) end-of-support plan for Windows ...

To support the Windows 11, version 25H2 release, the Windows Hardware Compatibility Program is set to accept submission for the release. However, any submission package must meet the pre-requisites t...

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...

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...

Microsoft is pleased to announce that a refreshed HLK for Windows 11, version 24H2 and Windows Server 2025 is available starting May 6, 2025. This release of the HLK contains test errata fixes, HLK...