In Outlook, the message recipient can decline to send read receipts. There are other scenarios where read receipts are not sent, such as if the recipient's email program doesn’t support read receipts. There is no way to force a recipient to send a read receipt. Select a tab option below for the version of Outlook you're using.

使用 vlookup、hlookup 和其他函数（如 index 和 match）根据您输入的值搜索和查找数据。 本文将让您快速回顾 vlookup，然后链接到更多内容。

Windows doesn't automatically download and install optional updates, but you will be notified when optional updates are available. To get all the available updates for your devices, periodically check Windows Update for all available updates, including optional updates. You can review the available updates and then select them from the list of ...

Users can't sort ranges that contain locked cells on a protected worksheet, regardless of this setting. Use AutoFilter. Using the drop-down arrows to change the filter on ranges when AutoFilters are applied. Users cannot apply or remove AutoFilters on a protected worksheet, regardless of this setting. Use PivotTable reports

了解如何使用 Windows 上的 Game Bar 来捕获游戏过程、与好友聊天和跟踪成就。

Notes: Starting in Outlook for Windows Version 2303 (Build 16215.10000), the All Apps button replaces the Get Add-ins buttonon the ribbon to view installed add-ins and access the Office Store.If you’re using an earlier version of Outlook, you'll see the Get Add-ins button instead.. If you don't see All Apps on the ribbon, your administrator may have turned off add-ins for your organization.

Important: If your device is out of support, it is no longer receiving security updates from Microsoft and may become more vulnerable to security risks and viruses.For this reason, we strongly recommend that you update to the latest version of Windows. Each version of Windows is supported for 18 months.

If you can't sign in. To protect your account, the Outlook.com team won't be able to help if you're having problems signing in. Use the Microsoft account sign-in helper to get back into your account. Get help signing in. If you can sign in. To see self-help answers, or to get support via email, Select Help from the top menu then Help.

If you decide you don't want the calendar you created, right-click the calendar and select Remove. Other calendars. You can view more than one calendar at a time, add other calendars, choose which calendar to display, and create new calendars. View options.

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。