Sign in to www.office.com from a web browser and start using the apps on the web or access other web services associated with your account such as OneDrive.. How you sign in to an installed Office app depends on your device.

If you want multiple copies of a printout, change the number of copies in the Print page: On Windows 7 or earlier, at the top of the Print page is a box labeled Copies with up and down arrows for you to choose how many copies of the document you want. Make your choice (either by entering a number or using the arrows), and then click Print.

Extension. Format. aac, adt, adts. Windows audio file. accdb. Microsoft Access database file. accde. Microsoft Access execute-only file. accdr. Microsoft Access ...

In the following countries, you have the right to cancel a subscription that has recurring billing with immediate effect and receive a prorated refund as described in the Microsoft Consumer Subscription Prorated Refund Policy:

How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!

Check the Xbox services, games, and apps for any service outages.

注意: 如果知道密码，但只想更改密码，请转到“account.microsoft.com 安全”选项卡，然后选择“更改我的密码”。. 如果知道用户名和密码但已停止工作，请阅读我的用户名和密码已停止工作。

Lithium-ion batteries wear out over time, which can result in a battery not holding a charge for as long as it did when it was new. Keeping the battery charged to 100% all the time can cause it to deteriorate faster.

You can add page breaks, but Word for the web can’t add section breaks yet. If you have the Word desktop application, use the Open in Word command to open the document and add section breaks there. When you’re done and you save the document, it will continue to be stored where you opened it in Word for the web.

Learn how to join a Microsoft Teams meeting if you don't have an account. Join a Teams meeting as a guest in the Windows app or on the web.