Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

Learn how to find the serial number on your Surface so you can register your product or request service.

Create and send personalized email messages to everyone on your address list with mail merge.

Learn about the sign-in options in Windows settings.

When you use InPrivate tabs or windows, your browsing data isn't saved on your PC once you're done.

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.

Find out how to manage your Xbox subscriptions to request a refund or cancel a recurring payment.

Learn how to cancel your Microsoft subscriptions such as Microsoft 365, Copilot Pro and Xbox. Troubleshoot issues if you can't cancel your subscription.

PowerPoint Viewer, a free download from Microsoft.com, enables viewing of PowerPoint presentations on computers that do not have PowerPoint installed.

Learn how to locate, install, and share files with custom fonts compatible with Microsoft Office applications.