HRESULT 0x80190004 (HTTP_E_STATUS_UNEXPECTED_CLIENT

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Description:

The HTTP client received an unexpected 4xx client-error response.

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HTTP_E_STATUS_UNEXPECTED_REDIRECTION	HTTP_E_STATUS_UNEXPECTED_SERVER_ERROR

HTTP_E_STATUS_UNEXPECTED_CLIENT_ERROR

HTTP_E_STATUS_UNEXPECTED_CLIENT_ERROR means the server or intermediary rejected the request with a 4xx response. The concrete status code and headers are essential: 401, 403, 404, 405, 407, 409, and 412 describe very different conditions.

What to check

Preserve the exact HTTP status, request method, request headers, and any structured error body.
Check authentication and authorization separately; a successful login does not imply that the caller is authorized for the resource.
Do not retry unchanged requests automatically until the specific 4xx status is understood.

RFC 9110: Client error status codes

RFC 9110: HTTP status semantics

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