HRESULT 0x80240448 (WU_E_PT_ADDRESS_IN_USE): meaning and diagnosis

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Description:

A local address needed by the Windows Update protocol operation was already in use.

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WU_E_PT_NO_TRANSLATION_AVAILABLE	WU_E_PT_ADDRESS_NOT_AVAILABLE

WU_E_PT_ADDRESS_IN_USE

WU_E_PT_ADDRESS_IN_USE is an address-binding error from the Windows Web Services layer. It is uncommon for normal update scans and should be correlated with the process, listener, or local network configuration involved.

What to check

Check for an application or service already using the relevant local endpoint or port.
Review recent network-interface, VPN, proxy, or service changes that may have altered local bindings.
Do not change remote WSUS settings until the local address conflict is confirmed.

Microsoft: WUA networking error codes

Microsoft: Windows Update log files

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