HRESULT 0x8019019F (HTTP_E_STATUS_UNSUPPORTED

Status / error code:

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Description:

The server returned HTTP 415 Unsupported Media Type.

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HTTP_E_STATUS_URI_TOO_LONG	HTTP_E_STATUS_RANGE_NOT_SATISFIABLE

HTTP_E_STATUS_UNSUPPORTED_MEDIA

HTTP_E_STATUS_UNSUPPORTED_MEDIA maps to HTTP 415 Unsupported Media Type. The origin server refuses the request because the request content uses a format or content coding the target resource does not support.

What to check

Verify the request Content-Type, charset parameters, and Content-Encoding.
Ensure the body actually matches the declared type, for example JSON versus form data or binary content versus text.
Check the endpoint contract for accepted media types and whether a proxy transforms or compresses the request body.

RFC 9110: 415 Unsupported Media Type

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