To activate using your digital license, you'll need to upgrade to Windows 11 Pro: Save your work and close any open apps.

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。

Note: When Excel opens a .csv file, it uses the current default data format settings to interpret how to import each column of data.If you want more flexibility in converting columns to different data formats, you can use the Import Text Wizard. For example, the format of a data column in the .csv file may be MDY, but Excel's default data format is YMD, or you want to convert a column of ...

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Training: Learn how to quickly get started with Microsoft 365, share and collaborate, work in Microsoft Teams, work from anywhere, and try cool Microsoft 365 features.

If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool. The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide.

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.

Argument name. Description. Sum_range (required). The range of cells to sum. Criteria_range1 (required). The range that is tested using Criteria1.. Criteria_range1 and Criteria1 set up a search pair whereby a range is searched for specific criteria. Once items in the range are found, their corresponding values in Sum_range are added.. Criteria1 (required)

You usually won't need to know the name of your Exchange server. If you do, contact the people who gave you the Exchange email address and ask them for the name of the Exchange server. When you set up a mobile device, the AutoDiscover feature will find the name of your Exchange server and mailbox, and configure Outlook for you.

Découvrez comment obtenir les dernières mises Windows jour pour assurer le bon fonctionnement et la sécurité de votre appareil.