What does HRESULT 0x80072EE8 (WININET_E_PROTOCOL_NOT_FOUND) mean?

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Description:

WinINet could not find a protocol with the required capabilities.

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WININET_E_NAME_NOT_RESOLVED	WININET_E_INVALID_OPTION

WININET_E_PROTOCOL_NOT_FOUND

WININET_E_PROTOCOL_NOT_FOUND is a WinINet HRESULT. It means that the requested URL scheme or protocol capability is not available to the WinINet operation. The application may be using an unsupported scheme, a malformed URL, or a configuration that prevents the required protocol from being used.

What to check

Validate the URL scheme, host and syntax before opening the request.
Use a protocol supported by the selected WinINet API and verify that the required Windows components are available.
Check proxy, security and group-policy settings that can prevent the intended protocol from being used.

Microsoft: WinINet overview

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