Automatically fill a series of data in your worksheet, like dates, numbers, text, and formulas. Use the AutoComplete feature, Auto Fill Options button and more.

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

Learn how to troubleshoot Windows sign in issues, including problems signing in to your Windows device after upgrading.

If you've forgotten your password and know the email address for your Microsoft account, you can reset your password online by verifying your identity using other information.

Describes how to investigate items in an Outlook Data File (.pst) and troubleshoot search issues.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Guide for troubleshooting print issues in Microsoft Edge. If Microsoft Edge still can't print after you try this step, go on to the next step.

Learn how to open a shared mailbox in the Outlook Web App. Shared mailboxes let a group of users view and send email, and share a calendar, from a common mailbox.

Learn how to AutoSave your files to OneDrive with Excel, PowerPoint or Word.

If you're troubleshooting Office and would like to remove the license files on your Mac, you can use the license removal tool. This will completely remove all licenses for Microsoft 365 for Mac.