If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription. Tip: Get tech expertise with Business Assist.

If you encrypt an Outlook message that contains voting buttons, message recipients won't be able to see them. That feature isn't supported at this time. Create an email message or reply to or forward a message that you received. On the Options tab, in the Tracking group, click Use Voting Buttons.

PMT, one of the financial functions, calculates the payment for a loan based on constant payments and a constant interest rate. Use the Excel Formula Coach to figure out a monthly loan payment. At the same time, you'll learn how to use the PMT function in a formula.

See plans and pricing. Find help and support content for Microsoft Phone Link. Learn time-saving tips and explore how you can use Phone Link to stay productive.