JanDeDobbeleer/oh-my-posh · error

QueryInterface IAsyncInfo: 0x%08x

Error message

QueryInterface IAsyncInfo: 0x%08x

What it means

When awaiting a Windows Runtime async operation from the SMTC (System Media Transport Controls) media player integration, oh-my-posh first QueryInterface's the returned object for IAsyncInfo. A non-zero HRESULT here is reported as this error, meaning the async operation object did not expose the IAsyncInfo interface - so its status can never be polled and the await aborts.

Source

Thrown at src/runtime/smtc_windows.go:196

	return ret
}

func comRelease(ptr unsafe.Pointer) {
	if ptr == nil {
		return
	}
	comCall(ptr, iunknownRelease)
}

// Polls instead of registering a Completed handler, to avoid implementing a COM callback object in Go.
func awaitAsync(asyncOp unsafe.Pointer) error {
	var asyncInfo unsafe.Pointer
	hr := comCall(asyncOp, iunknownQueryInterface,
		uintptr(unsafe.Pointer(&iidAsyncInfo)),
		uintptr(unsafe.Pointer(&asyncInfo)),
	)
	if hr != 0 {
		return fmt.Errorf("QueryInterface IAsyncInfo: 0x%08x", hr)
	}
	defer comRelease(asyncInfo)

	deadline := time.Now().Add(smtcAsyncTimeout)
	for {
		var status uint32
		comCall(asyncInfo, asyncInfoGetStatus, uintptr(unsafe.Pointer(&status)))
		switch status {
		case asyncStatusCompleted:
			return nil
		case asyncStatusCanceled:
			return errors.New("async cancelled")
		case asyncStatusError:
			return errors.New("async failed")
		}
		if time.Now().After(deadline) {
			return errors.New("async timed out")
		}

View on GitHub (pinned to 0976794618)

Solutions

  1. Update Windows - very old builds may not implement the expected SMTC async interfaces
  2. Confirm the process runs on a thread where WinRT is usable (the code initializes RO_INIT_MULTITHREADED just before)
  3. Treat the media segment as unavailable - the error already degrades the segment rather than crashing the prompt
  4. If reproducible on a supported Windows 10/11 build, report it with the exact HRESULT code in the message
Defensive patterns

Strategy: fallback

Try / catch

info, err := runtime.QueryMediaPlayer(env)
if err != nil {
	// render the media segment empty / hide it instead of failing the prompt
	return mediaSegment{}
}

Prevention

When it happens

Trigger: QueryMediaPlayer or readMediaProperties calling awaitAsync on a Windows version/WinRT surface where the async operation object fails to provide IAsyncInterface; corrupted COM aggregation or an unexpected object returned by the RequestAsync call.

Common situations: Old or stripped-down Windows builds where GlobalSystemMediaTransportControlsSessionManager behaves unusually; COM initialization issues in the calling thread; third-party shell environments interfering with WinRT activation.

Related errors

AI-assisted analysis of JanDeDobbeleer/oh-my-posh@0976794618 (2026-08-31). Data as JSON: /api/errors/1090b88aa38578c8. Report an issue: GitHub.