HRESULT 0x80240449 (WU_E_PT_ADDRESS_NOT

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The local network address required by the Windows Update operation was unavailable.

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WU_E_PT_ADDRESS_IN_USE	WU_E_PT_OTHER

WU_E_PT_ADDRESS_NOT_AVAILABLE

WU_E_PT_ADDRESS_NOT_AVAILABLE indicates that the Windows Web Services layer could not use an address in the current context. A changed network interface, disconnected VPN, or stale binding can produce this kind of failure.

What to check

Confirm that the intended network interface and route are present when the scan runs.
Compare the failure time with VPN reconnects, DHCP changes, sleep/resume, or network-policy changes.
Retry after network stability is restored and use the earlier transport log entries to identify the affected endpoint.

Microsoft: WUA networking error codes

Microsoft: Windows Update troubleshooting

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