What does HRESULT 0x80190198 (HTTP_E_STATUS_REQUEST_TIMEOUT) mean?

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Description:

The server returned HTTP 408 Request Timeout after waiting too long for a complete request.

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HTTP_E_STATUS_PROXY_AUTH_REQ	HTTP_E_STATUS_CONFLICT

HTTP_E_STATUS_REQUEST_TIMEOUT

HTTP_E_STATUS_REQUEST_TIMEOUT maps to HTTP 408 Request Timeout. The server did not receive a complete request message within the time it was prepared to wait.

What to check

Check slow or interrupted uploads, idle connection timeouts, request-body streaming, and mismatched Content-Length or chunked framing.
Compare client, proxy, load balancer, and origin-server timeout values.
Retry only when the application can determine that repeating the operation is safe; use a new connection if retrying after 408.

RFC 9110: 408 Request Timeout

RFC 9112: HTTP/1.1 framing and connection management

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