HRESULT 0x80072EF8 (WININET_E_NO_CONTEXT): meaning and diagnosis

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Description:

No context value was supplied for the WinINet operation.

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WININET_E_NO_DIRECT_ACCESS	WININET_E_NO_CALLBACK

WININET_E_NO_CONTEXT

WININET_E_NO_CONTEXT is a WinINet HRESULT. It means that an operation requiring an application context did not receive one. This is especially relevant when asynchronous WinINet callbacks must associate a completion or status notification with the originating request.

What to check

Supply and preserve the documented context value for asynchronous operations that need callback correlation.
Ensure that callback code can safely interpret the context value for the lifetime of the request.
Use a synchronous API pattern instead when the application does not require callback-driven processing.

Microsoft: WinINet overview

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