How to verify KCC disabled, do you know ISTG is enabled or disabled for you active directory sites, you check the ISTG status using below command
command Verify KCC status on intersite (by default KCC enabled)
dsquery site -name Default-First-Site-Name | dsget site –autotopology
autotopology
no
dsget succeeded
Note: If automatic inter-site topology generation is enabled (yes) or disabled (no).
