Hi @Bon Macalindong ,
if the VMs in the 2 vNets/subnets are Windows VMs did you allow ICMP in the OS firewalls on both VMs?
Are there any Network Security Groups involved associated with the subnets or/and VMs?
No overlapping IP address ranges in the vNets?
You could check the effective routes as well: Diagnose a virtual machine routing problem
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten