add a template

Author: AmandaAZ

support/entra/entra-id/app-integration/asp-dot-net-open-web-interface-for-dot-net-core-authentication-sign-in-failures.md

@@ -50,3 +50,6 @@ For more information about using Fiddler, see [Collect HTTPS traffic using Fiddl
 ## Microsoft Entra authentication and authorization error codes
 
 For a list of Microsoft Entra authentication and authorization errors, see [Microsoft Entra authentication and authorization error codes](/entra/identity-platform/reference-error-codes).
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+[!INCLUDE [Azure Help Support](../../../includes/azure-help-support.md)]