From: Francis De Brabandere <francisdb@gmail.com> The script engine probes IDispatchEx on every dispatch lookup (see get_disp_id() in vbdisp.c) and falls back cleanly to plain IDispatch on E_NOINTERFACE; the negative response is therefore expected, not exceptional. FuncRef objects returned by GetRef are plain IDispatch and don't implement IDispatchEx, so every callback through them currently emits a WARN. Mirror commit ce6c9f6d338a40c4f39b6758dae6d600823da767 ("vbscript: Silence BuiltinDisp::QueryInterface(IID_IDispatchEx) warning"): keep the catch-all WARN for genuinely unknown IIDs but skip it for IID_IDispatchEx specifically. --- dlls/vbscript/vbdisp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/dlls/vbscript/vbdisp.c b/dlls/vbscript/vbdisp.c index 79b1a728a52..38185dd0411 100644 --- a/dlls/vbscript/vbdisp.c +++ b/dlls/vbscript/vbdisp.c @@ -586,7 +586,8 @@ static HRESULT WINAPI FuncRef_QueryInterface(IDispatch *iface, REFIID riid, void return S_OK; } - WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv); + if(!IsEqualGUID(riid, &IID_IDispatchEx)) + WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv); *ppv = NULL; return E_NOINTERFACE; } -- GitLab https://gitlab.winehq.org/wine/wine/-/merge_requests/10658