HRESULT 0x80240030 (WU_E_INVALID_PROXY

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Description:

The proxy list configured for Windows Update has an invalid format.

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WU_E_CALL_CANCELLED_BY_POLICY	WU_E_INVALID_FILE

WU_E_INVALID_PROXY_SERVER

WU_E_INVALID_PROXY_SERVER means Windows Update rejected the configured proxy-server list before it could use it for the request. Browser settings alone are not sufficient evidence because Windows Update uses the system update path.

What to check

Inspect the system WinHTTP proxy configuration and the policy that supplies it.
Correct malformed entries, invalid separators, or unsupported proxy syntax rather than changing unrelated update components.
Retry the scan after the proxy configuration is valid and verify the request route to the intended update endpoint.

netsh winhttp show proxy

Microsoft: Windows Update error reference

Microsoft: Windows Update proxy selection

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