Facepalm: Microsoft's default Weather app in Windows 11 can use nearly 1.2 GB of RAM while sitting open on a forecast screen, according to testing by Windows Latest. MSN Weather is the standard weather app included with Windows 11. The Windows app also carries advertising. But it seems Microsoft has been building simple apps like this one using WebView2, the company's framework for embedding web content inside Windows apps. For now, the Weather app shows the gap between Microsoft's broader optimization goals and the experience of using some Windows utilities today.