解决激活错误. 如果 Microsoft 365 无法激活，其最后会变为未授权，且 Microsoft 365 的所有编辑功能都会被禁用。 Microsoft 可能由于多种原因变为未授权。

If you’re still having problems, go to Solution 4.. Solution 3: Force shutdown. Select Start > Power > Shut down and wait a moment for your Surface to shut down. Then press and hold the power button for 20 seconds. If you see the logo screen appear after a few seconds, continue to hold for the full 20 seconds until you see the logo screen again.

Note: If you installed OneNote before you install and activate Microsoft 365 or Office 2019, then the end-user license that appears in OneNote will display as “Home and Student.”As soon as you’ve activated your edition of Microsoft 365 or Office 2019 and then restart OneNote, your license will be applied to OneNote, even though the default license for it may still be displayed as “Home ...

Microsoft Edge offers two optional browsing modes—Balanced and Strict—for enhanced security to provide you with an extra layer of protection when browsing the web and unfamiliar sites.

Select the View tab and, in Advanced settings, select Show hidden files, folders, and drives and OK.

Microsoft Authenticator is a free app that helps you sign in to all your accounts without using a password - just use a fingerprint, face recognition, or a PIN.

By setting up MFA, you add an extra layer of security to your Microsoft 365 account sign-in. For example, you first enter your password and, when prompted, you also type a dynamically generated verification code provided by an authenticator app or sent to your phone.

If you know your username and password but they have stopped working, read My username and password have stopped working.. If you forgot your Microsoft account username or email address, and you have previously set up other security information on your Microsoft account, follow the steps below.

The Office Clipboard allows you to copy up to 24 items from Office documents or other programs and paste them into another Office document. For example, you can copy text from an email message, data from a workbook or datasheet, and a graphic from a presentation, and then paste them all into a document.

Email a link to just a few people. Right-click (or press and hold) the file, select More OneDrive sharing options > Invite people, then enter their email addresses.(If you're using OneDrive for Business, select Share, select an option from the drop-down list box, and select Apply.Then enter email addresses above the blue line and select Send.)