@Mac Thank you for reaching out to Microsoft Q&A.
Azure VPN Client only supports OpenVPN protocol so please make sure that in the configuration, you choose OpenVPN as Tunnel Type. Here are snapshots showing how to get access to the Server Secret.
As seen from the below snapshot, with the Tunnel Type OpenVPN, please click on "Download VPN client"
Then open the file that says AzureVPN
This should contain the Server Secret as shown below
Please let me know if you face any challenges withthe same and we will be glad to assist further. Thank you!
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