Hi @szymon_dybczak ,

thanks for sharing the OAuth mount example,that is exactly the right config

From the error message (`UnknownHostException: <account>.dfs.core.windows.net`), it looks like the cluster can’t even find the storage account’s address
That often happens in VNet-injected workspaces if DNS isn’t set up for the storage endpoint.

So my suggestion was simply to fix the network/DNS part first. Once the hostname resolves, your OAuth mount code will work as-is.

--> first make sure the cluster can resolve and reach the storage URL, then use your OAuth config to mount. Both pieces together solve the issue.