Note: If it’s been fewer than 10 days since you upgraded to Windows 10, your previous version of Windows will be listed as a system file you can delete.If you need to free up drive space, you can delete it, but keep in mind that you'll be deleting your Windows.old folder, which contains files that give you the option to go back to your previous version of Windows.

Microsoft Defender is a security app that helps people and families stay safer online with malware protection, web protection, real-time security notifications, and security tips.Microsoft Defender is included in a Microsoft 365 Family or Personal subscription and works on your phone (Android or iOS), PC, and Mac.

有关共享家庭资源的其他信息. 接受共享Microsoft 365 家庭版邀请后，将自动将你添加到订阅持有者的家庭组。 家庭组的成员有权访问共享的家庭电子邮件收件箱、日历和 OneNote 笔记本，但无法访问彼此的个人日历、电子邮件或文件。

RAM. 16 GB (recommended) Storage type. Solid State Drive or SSD (recommended) Processor architecture. x64 or ARM64. Virtual Machine Platform. This setting needs to be enabled.

Many tasks for Office products don't require a product key because your Microsoft account takes care of them instead.

To do this. Press. Move to the Tell Me or Search field on the Ribbon to search for assistance or Help content.. Alt+Q, then enter the search term. Open the File page to use Backstage view.. Alt+F. Open the Home tab to use common formatting commands, paragraph styles, and the Find tool.. Alt+H. Open the Insert tab to insert tables, pictures and shapes, headers, or text boxes.

Select Add a keyboard and choose the keyboard you want to add. If you don't see the keyboard you want, you may have to add a new language to get additional options. If this is the case, go on to step 4.

Windows 允许添加多个用户帐户以使用同一设备，使每个用户都有自己的设置、文档和应用程序。 例如，家长可以拥有自己的具有管理权限的帐户来管理设置和安装软件，而孩子可以拥有启用了家长控制的标准帐户来监视和限制其使用情况。

有关其他要求，请参阅 Office 的系统要求。. 打开或关闭新的 Outlook 如何尝试新体验. 打开 Outlook，然后关闭旧版 Outlook 开关。. 如何切换回旧版 Outlook. 可随时通过启动 Outlook 切换回，然后单击“ 帮助 ”菜单并选择“ 还原到旧版 Outlook”。 在新的 Outlook for Mac 中添加的帐户不会自动添加到旧版 Outlook ...

Turn your PC off completely. To shut down, select Start and then select Power > Shut down.. Sleep. Sleep uses very little power, your PC starts up faster, and you’re instantly back to where you left off.