Describes the new and improved features of Microsoft Windows Installer 4.5. The article also discusses the issues that are addressed from earlier versions of Windows Installer.

Learn how to download files or folders in OneDrive and OneDrive for Business.

correl 函数返回两个单元格区域的相关系数。 使用相关系数确定两个属性之间的关系。 例如，您可以检查一个位置的平均温度和空调使用情况之间的关系。

Get help if your Surface Pen isn't working or you're having problems writing. Troubleshoot problems related to your Surface Pen.

The Calculator app for Windows is a touch-friendly version of the desktop calculator in previous versions of Windows. You can open multiple calculators at the same time in resizable windows on the desktop and switch between Standard, Scientific, Graphing, Programmer, Date calculation, and Converter modes.. To get started, select the Start button, and then select Calculator in the list of apps.

Learn how to pin an app to the taskbar from the Start menu or apps list by right-clicking and selecting the "Pin to taskbar" option.

Wenn Ihr Kauf von Office oder Microsoft 365 mit einem Product Key verbunden war, geben Sie Ihren Product Key auf einer der Websites ein, die nachstehend für Ihr Produkt aufgeführt sind.

Get troubleshooting steps for when you can't sign in to the Xbox app.

Find out how the Windows location service works and how to change the location privacy settings.

Outlook. Outlook on the web. Mail and Calendar. Available for purchase as part of Microsoft 365 or Microsoft 365. Accessible from most browsers at Microsoft 365 portal.. Available for iOS and Android devices.