Jinoh Kang (@iamahuman) commented about dlls/ntdll/actctx.c:
(pActCtx->dwFlags & ~ACTCTX_FLAGS_ALL)) return STATUS_INVALID_PARAMETER;
- if ((pActCtx->dwFlags & ACTCTX_FLAG_RESOURCE_NAME_VALID) && !pActCtx->lpResourceName)
return STATUS_INVALID_PARAMETER;
Not sure if we have existing tests for this?