如果这是你第一次安装 Microsoft 365，则可能需要先执行一些设置步骤。展开下面的 “了解详细信息”部分。 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转到“登录并安装 Office”的部分。

If you have the Pro, Enterprise, or Education editions of Windows 10 in S mode, Windows Update will not offer Windows 11 because S mode is not available in those editions of Windows 11. Therefore, if you have the Pro, Enterprise or Education editions of Windows 10 in S mode, you'll need to switch out of S mode to upgrade to Windows 11.

Note: The Automatically save passwords setting has been retired with Microsoft Edge version 124 and later. Instead, Edge will offer to save your passwords each time you enter new credentials in the Edge browser. All your previously autosaved passwords will continue to be available for a seamless login.

Your account page is on Office.com. After you sign in, click the arrow next to your name, and then click My Account.

This article applies if you’ve recently made changes to your device hardware and are trying to upgrade to Windows 11. Hardware changes might affect your upgrade eligibility, though you’ll need to take a few steps to see your updated eligibility in Settings.

Activate an Office purchase or offer that's included on a new Windows device. Activate Office from Microsoft Workplace Discount Program. Activate a brand new Office product key. Troubleshoot activation errors. Activate Microsoft 365 or a non-subscription version of Office.

Buy stuff from Microsoft Store online (from your mobile device, on Xbox One, in the Microsoft Store app on your Windows 10/11 or Windows 8.1 device, or via the web).

In the Scheduling Assistant, either click the box under your name and type an attendee's name or email address or click the Add Attendees button to bring up your address book.. Select the icon next to the attendee's name in the Scheduling Assistant to mark a specific attendee as a Required Attendee,Optional Attendee, or a Resource.When you start typing a attendee's name, Outlook will provide ...

Tip: If you have a Microsoft 365 Family subscription, people you've shared the subscription with can also set up a personalized email address with your connected domain.After you've set up your domain, people you've shared with will see an option to add a personalized email address in the premium features section of Outlook settings.

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.