On October 15, 2025, Microsoft made an announcement stating that it aims to elevate the quality and security standards of Windows drivers. This will be achieved by implementing more stringent policies within the framework of the Windows Hardware Compatibility Program (WHCP). As the year progresses, Microsoft is set to enforce the use of driver isolation verification (InfVerif /h). This is a specialized set of rules crafted to determine whether Windows drivers comply with the 'driver isolation' principle. The principle ensures that driver packages are impervious to external alterations and can be easily installed and updated.

In the past, these rules merely served as a recommended guideline. However, they are now transitioning into a mandatory compliance requirement. Any drivers submitted for certification must successfully pass this verification process. Failure to do so will result in the denial of Microsoft's official certification.

Additionally, Microsoft is urging its partners to take a proactive stance by running InfVerif /h for self-assessment purposes before submitting their drivers. This particular set of rules has already been incorporated into the Hardware Lab Kit (HLK) designed for Windows 11 version 25H2. Consequently, vendors conducting tests with this version of Windows will not be required to undertake any extra steps.