Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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I don't know why this error occurs. Is the permission setting for calling NSG lists to API wrong?
Please tell me how to set it up in detail.please.
Hi stemsoft4,
Authorization Error means that your AAD application/Service Principle is not having access to read the NSG resource.
You need to assign atleast reader access to your AAD aplication to list the rules.
Please "Accept as answer" if this helps.