Integrate Azure Git Repo to Jenkins multibranch pipelines

Hello Friends,

I'm setting up CICD pipelines for our project which has code repos in Azure Devops On Prem and I'm trying to integrate it with Jenkins which is running on different Azure cloud subscription. We have sorted out firewall and whitelisting. There seems to be some issue when i try to connect to repos from Jenkin's multi branch job and throws Authentication failed error. But same is working fine when I use FreeStyle or Pipeline type jobs.

Anybody did this kind of integration in the past? Not sure if I'm missing something. Please throw some light if someone have experience in this kind of setup

Thanks in Advance