Disk upper filter driver not listing in HCK and HLK.

Hi All,

We have a disk upper filter derived from diskperf sample. We are doing HCK and HLK testing for this driver first time. On Windows server 2016, the driver passed the test cases. But for Server 2012 R2(HCK) and Server 2019(HLK), the driver is not listed in HLK studio. Tryouts like reinstallation, installing driver before installing HLK client, installing driver after installing HLK client not worked for us. Whether HLK/HCK is applicable to the disk upper filter? If not then maybe we can look for an attestation signing.