HRESULT 0x80072F84 (WININET_E_SERVER

Status / error code:

Category:

Constant name:

Source:

Facility:

Operating System:

Description:

The target server is unreachable.

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WININET_E_DISCONNECTED	WININET_E_PROXY_SERVER_UNREACHABLE

WININET_E_SERVER_UNREACHABLE

WININET_E_SERVER_UNREACHABLE is a WinINet HRESULT. It means that WinINet could not establish communication with the target server. DNS, routing, firewall, server availability, port configuration, proxy policy or TLS negotiation can be involved.

What to check for WININET_E_SERVER_UNREACHABLE

Verify the resolved address, route, port and firewall path from the affected machine.
Test the destination through the same proxy and VPN configuration used by the application.
Check server availability and load balancer health before changing client retry behavior.

Microsoft documentation

Diagnostic interpretation

This result has the HRESULT value 0x80072F84. AllStat records the condition as “The server is unreachable”.

Evidence to capture

Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the wininet / server / unreachable operation.
check the documented return contract of the specific API because the same HRESULT can require different recovery in different interfaces.

Retry and recovery

Retry this result only when the owning API documents a transient state or after the condition described as “The server is unreachable” has changed.

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