If you’re having problems getting connected to a network and can’t get onto the Internet, here are some things you can try in Windows.

Use the XLOOKUP function when you need to find things in a table or a range by row. For example, look up the price of an automotive part by the part number, or find an employee name based on their employee ID. With XLOOKUP, you can look in one column for a search term, and return a result from the same row in another column, regardless of which side the return column is on.

Microsoft アカウントにサインインするためのエイリアスを使用した Microsoft アカウントのメール アドレスまたは電話番号を変更する方法について説明します。

If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Admins set default meeting settings. They try to optimize for most use cases, but if you want to adjust your options for a specific Teams meeting, go to Meeting options.

How to use the COUNT function in Excel to count the number of cells that contain numbers, and to count numbers within a list of arguments.

Learn how to set up your user account for multifactor authentication with Microsoft 365.

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Decide which documents to recover from an unexpected close, delete recovered files you don't want, or close recovered files to review later.

Get help with using mail, calendar, and contacts on Outlook.com.