deepseek-ai/deepseek-harness · error · Error

CoCreateInstance(FileOpenDialog) failed: HRESULT 0x${(create

Error message

CoCreateInstance(FileOpenDialog) failed: HRESULT 0x${(created >>> 0).toString(16)}

What it means

Error "CoCreateInstance(FileOpenDialog) failed: HRESULT 0x${(created >>> 0).toString(16)}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/host/directory-picker-native/src/win32-dialog-bindings.ts:144

        // legacy 5.1 tree over a cosmetic concern.
        return
      }
      for (const context of DPI_AWARENESS_CONTEXTS) {
        if (setContext(context) !== null) return
      }
      // Unreachable in practice (SYSTEM_AWARE is accepted wherever the symbol
      // exists); if a host ever refuses everything, the dialog still works —
      // just without a DPI opt-in.
    },
    coInitializeSta: () => coInitializeEx(null, COINIT_APARTMENTTHREADED) as number,
    coUninitialize: () => {
      coUninitialize()
    },
    currentThreadId: () => getCurrentThreadId() as number,
    createFolderDialog: (): Win32FolderDialog => {
      const out = Buffer.alloc(pointerSize)
      const created = coCreateInstance(CLSID_FILE_OPEN_DIALOG, null, CLSCTX_INPROC_SERVER, IID_IFILE_OPEN_DIALOG, out) as number
      if (created < 0) throw new Error(`CoCreateInstance(FileOpenDialog) failed: HRESULT 0x${(created >>> 0).toString(16)}`)
      const dialog = koffi.decode(out, 'void *')
      return {
        setOptions: options => method(dialog, SLOT_SET_OPTIONS, protoSetOptions)(options),
        setTitle: title => method(dialog, SLOT_SET_TITLE, protoSetTitle)(title),
        show: () => method(dialog, SLOT_SHOW, protoShow)(null),
        resultPath: () => {
          const itemOut: unknown[] = [null]
          const gotItem = method(dialog, SLOT_GET_RESULT, protoGetResult)(itemOut)
          if (gotItem < 0) return { hr: gotItem }
          const item = itemOut[0]
          try {
            const nameOut: unknown[] = [null]
            const gotName = method(item, SLOT_GET_DISPLAY_NAME, protoGetDisplayName)(SIGDN_FILESYSPATH, nameOut)
            if (gotName < 0) return { hr: gotName }
            const path = readUtf16(koffi, nameOut[0])
            coTaskMemFree(nameOut[0])
            return { hr: gotName, path }
          } finally {

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/host/directory-picker-native/src/win32-dialog-bindings.ts:144 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/16667e59347f283f. Report an issue: GitHub.