Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

Sign in to SharePoint. SharePoint is a browser-based app that you connect to through your web browser, like so: Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint. Tip: If you don't see the SharePoint app under All apps, use the Search box near ...

Save a message as a file on your computer or in the cloud. In Mail, from the message list, select the message you want to save so it opens in the reading pane, or double-click the message to open to open it in a new window. From the message header, select More actions > Save as.

To edit a PDF, open it in Word. This works best with PDFs that are mostly text. PDFs of book chapters or something that looks like a manuscript from a copier won't be formatted well in Word. Go to File > Open. Find the PDF and open it (you might have to select Browse and find the PDF in a folder).

You can directly install add-ins from this page or select More Add-ins to explore. In the Office Add-ins dialog, select My Add-ins tab. Select an add-in you want to view the details for and right-click to select Add-in details option. Click a heading below for more information .

选择“ 最小文件大小 ”以减小文件大小（例如，如果要将该文件作为电子邮件附件发送）。. 单击“ 选项 ”来设置演示文稿将如何作为 PDF 显示。. 以下是一些可用的选项：. 若要仅将当前幻灯片保存为 PDF，请在“ 范围 ”下选择“ 当前幻灯片 ”。. 若要将特定 ...