WAC vMode fails validating SMB

Hi

Reviewing vMode and try add a Hyper-V 2025 (non hyperconverged) cluster with a FC SAN. Fails on Validating "SMB port accessibility".  Have gone through firewall settings and opened all neccesary ports that i can find mentioned. Even tried without FW turned off without any success so hit the wall now. WAC vMode is installed on a vm running Win2025std and in same domain as the cluster (and hosts) i try  to add. Probably some obvious thing i have missed so any suggestions?