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Test + doc: x-ms-tokenboundauth header for AKV mTLS PoP via ExtraHeaderParameters #3864

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Merged
gladjohn merged 1 commit into from
Jun 17, 2026
+567 −0
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Test + doc: x-ms-tokenboundauth header for AKV mTLS PoP via ExtraHeaderParameters #3864

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4 changes: 4 additions & 0 deletions tests/DevApps/daemon-app/daemon-app-msi-mtls/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,10 @@
//
// Trigger: AuthorizationHeaderProviderOptions.ProtocolScheme = "MTLS_POP" in appsettings.json
// (under AcquireTokenOptions, with RequestAppToken = true).
//
// Important: Azure Key Vault requires "x-ms-tokenboundauth": "true" header on mTLS PoP
// requests to trigger TLS renegotiation for client cert binding. This is configured via
// ExtraHeaderParameters in appsettings.json. Without it, AKV returns 401.

var factory = TokenAcquirerFactory.GetDefaultInstance();

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3 changes: 3 additions & 0 deletions tests/DevApps/daemon-app/daemon-app-msi-mtls/appsettings.json
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Expand Up @@ -13,6 +13,9 @@
"ManagedIdentity": {
"UserAssignedClientId": "4b7a4b0b-ecb2-409e-879a-1e21a15ddaf6"
}
},
"ExtraHeaderParameters": {
"x-ms-tokenboundauth": "true"
}
},

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