Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.

In PowerPoint, learn how to troubleshoot Designer if you don't see the Designer button, no suggestions are offered, or the button is grayed out.

Learn how to use Narrator, a screen-reading app built into Windows, with this complete guide and how-to articles.

You can manually adjust the column width or row height or automatically resize columns and rows to fit the data.

If you have multiple accounts in Outlook, when you compose a new email message, Outlook picks the default account as the From account.However, if you want to Reply, Reply All, or Forward a message, Outlook will send your message with the same account the original mail was sent to.For example, Cheryl has two accounts.

See a diagram of Surface Book 2 and learn more about its features, memory, and storage.

Learn about Outlook.com encrypted messages. Discover how to encrypt an email in Outlook, send an encrypted email, and read an encrypted email.

Format numbers in Excel. This topic lists the formats and provides brief descriptions.

Get the most out of your subscription with expert advice and support from small business advisors. Business Assist for Microsoft 365 is designed for small businesses to give you and your employees around-the-clock access to small business advisors as you grow your business, from onboarding to everyday use.

See how to arrange all your open windows using the mouse, keyboard, or the Snap Assist feature in Windows.