After launching an Office app, you might receive a message that says Get genuine Office.. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

Learn how reserved storage works in Windows to conserve disk space for temporary files, caches, and other files.

获取有关 Windows 安全的帮助; 在 Microsoft Edge 中查看和删除浏览器历史记录; 删除和管理 Cookie; 重新安装 Windows 时安全移除有价值的内容

Learn how you can manage cookies and site data you've temporarily allowed in Microsoft Edge.

Create a document or other type of library in SharePoint to securely store files where you and your co-workers can find them easily, work on them together, and access them from any device at any time.

Découvrez comment installer Office 2013 sur PC ou Office pour Mac 2011.

Learn how to install Skype for Business on your Windows computer, mobile device, or Macintosh.

You can refer to the contents of cells in another workbook by creating an external reference formula. An external reference (also called a link) is a reference to a cell or range on a worksheet in another Excel workbook, or a reference to a defined name in another workbook.

Discover how to boost your browsing speed and save battery life with Microsoft Edge's performance features, such as sleeping tabs and efficiency mode.