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INET_E_CANNOT_CONNECT
INET_E_CANNOT_CONNECT is a URL Moniker HRESULT. It means that the connection attempt for the requested Internet object failed. DNS, routing, proxy, firewall, server availability or protocol negotiation can be responsible.
Diagnostic discriminator: Use a known-good URL on the same network path to separate general connectivity from a target-specific failure. If name resolution succeeds but the socket cannot reach the resolved host and port, focus on route, proxy, firewall or server availability. If other targets work, preserve the failing URL and resolved address before changing client configuration.
What to check for INET_E_CANNOT_CONNECT
- Verify the target URL, resolved address, route, proxy configuration and destination port from the affected machine.
- Test with an independent client using the same account and network policy.
- Differentiate a transient network failure from a permanent endpoint or configuration error before retrying.
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