I am unable to access a shared folder in the on-prem Windows Server VM from a Azure Cloud Windows Server VM. What could be the problem?

Hello all,

I am unable to access a shared folder in the on-prem Windows Server VM from a Azure Cloud Windows Server VM. What could be the problem?

In the on-prem VM, I have ensured the account I use in the cloud VM has access to the shared folder in the on-prem VM.

I have tried:

\OnPremServerName\SharedFolderName

and

\IP.Address.Of.The.On.Prem.VM\SharedFolderName

But neither methods work.

I am able to ping the on-prem server from the cloud VM.

The on-prem server is Windows Server 2012 and the cloud VM is Windows Server 2016.

What configuration am I missing?