Find out how to free up space on your device by deleting unnecessary files, uninstalling apps, and moving files to other drives.

You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.

How to select and delete a page in Word that contains text, graphics, or empty paragraphs.

How to recall and/or replace an email message you sent by using Microsoft 365 and your built-in Exchange Server account.

Learn how to sign in or out of your Outlook.com email account, and get solutions for common login issues.

Use System Restore. Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually.

Learn how to improve Windows PC performance if your device is running slowly.

If you see a gray OneDrive icon, this means you are not signed in. If you cannot sign in to your OneDrive sync app, or the sync app says OneDrive is not connected, follow the steps below.

Learn how to manage your Microsoft devices. Add, remove, register, or rename a device on your Microsoft account.

Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.