Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

Hotmail bây giờ là Outlook.com. Tìm hiểu cách đăng nhập để truy nhập tài khoản email Outlook.com, Hotmail, Live hoặc MSN của bạn.

Learn how to set up Microsoft Family Safety to manage screen time, filter content, and share location with your family members.

Learn how to use your voice to create and edit documents in Word with the Dictate feature. Find out how to enable, customize, and troubleshoot Dictation.

Insert PDF content into your presentation either as a picture that shows on your slide, or as a document that you can open during your slide show.

The IFS function checks whether one or more conditions are met and returns a value that corresponds to the first TRUE condition. IFS will allow you to include up to 127 pairs of conditions (the test if something is True and the result if something is true). IFS can take the place of multiple nested IF statements.

You can refer to the contents of cells in another workbook by creating an external reference formula. An external reference (also called a link) is a reference to a cell or range on a worksheet in another Excel workbook, or a reference to a defined name in another workbook.

Find answers to common questions about genuine Windows software.

Change or update Microsoft Teams settings from your profile picture menu. Set high contrast mode for accessibility and set your language and time.

If there was an unusual sign-in attempt for your account, you'll get an email or text message. We'll send a message to all your alternate contact methods.