Lists the file formats that are supported in Excel. The topic also includes a list of unsupported file formats and some suggested workarounds.

When your old email address or phone number doesn't suit you anymore—but you want to retain your contacts, online storage, subscriptions, and settings—you can add a new email address or phone number as an alias to your existing Microsoft account.

Training: With OneDrive, you can sync files between your computer and the cloud, so you can get to them from anywhere.

After launching an Office app, you might receive a message that says Get genuine Office.. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.

Enter your password and select the arrow to continue. You’re now signed in to Skype.

Click or tap Browse, and in the Browse box, find the Excel workbook with the data you want to insert and link to.

This article answers common questions about Microsoft Authenticator. Select the headings below to see more information.

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

Use criteria in an Access query to find specific information from your desktop database.

Learn how to change Internet Explorer settings, or reset browser settings when there's a problem.