As an colleague of mine has already bloged about the Problem were well, I will use his Post and only provide you with an quick Update
vCenter 6.5: #SRM, #vSphere Replication, #NSX problems after SSL change (LS_Update_certs.py)
Fabian has described the Problem perfectly and also his Solutions works fine on vSphere 6.0 but not on 6.5 the command now musst look like this:
cd /usr/lib/vmidentity/tools/scripts/
python ls_update_certs.py –url https://psc.testdrive.local/lookupservice/sdk –fingerprint 6A:3D:41:79:D0:70:5C:GB:54:F6:51:C9:8A:9A:C6:9E:4A:79:16:BE –certfile /var/tmp/VMCA.crt –user Administrator@vsphere.local –password VMware1!
An still our recommendations DO NOT COPY it type it.