ERROR_WINHTTP_INVALID_OPTION

A request to [**WinHttpQueryOption**](https://learn.microsoft.com/en-us/windows/desktop/api/Winhttp/nf-winhttp-winhttpqueryoption) or [**WinHttpSetOption**](https://learn.microsoft.com/en-us/windows/desktop/api/Winhttp/nf-winhttp-winhttpsetoption) specified an invalid option value.

Matched as: the code as given (hex)

Other names

• ERROR_INTERNET_INVALID_OPTION: A request to [**InternetQueryOption**](https://learn.microsoft.com/en-us/windows/desktop/api/Wininet/nf-wininet-internetqueryoptiona) or [**InternetSetOption**](https://learn.microsoft.com/en-us/windows/desktop/api/Wininet/nf-wininet-internetsetoptiona) specified an invalid option value.

Source: WinHTTP Error Messages · CC-BY-4.0 (MicrosoftDocs/sdk-api, repo license verified 2026-10-09) · retrieved 2026-10-09