diff --git a/public/app/plugins/datasource/prometheus/configuration/DataSourceHttpSettingsOverhaulPackage.tsx b/public/app/plugins/datasource/prometheus/configuration/DataSourceHttpSettingsOverhaulPackage.tsx
index f427d8c2181..098580399e9 100644
--- a/public/app/plugins/datasource/prometheus/configuration/DataSourceHttpSettingsOverhaulPackage.tsx
+++ b/public/app/plugins/datasource/prometheus/configuration/DataSourceHttpSettingsOverhaulPackage.tsx
@@ -141,6 +141,12 @@ export const DataSourcehttpSettingsOverhaul = (props: Props) => {
           Service for Prometheus data source to authenticate with SigV4.
         </Alert>
       )}
+      {azureAuthSelected && (
+        <Alert title="Deprecation Notice" severity="warning">
+          Azure authentication in the core Prometheus data source is deprecated. Please use the Azure Monitor Managed
+          Service for Prometheus data source to authenticate using Azure authentication.
+        </Alert>
+      )}
       <Auth
         {...newAuthProps}
         customMethods={customMethods}