Click Close when the installation is complete.

Click Continue and follow the on-screen instructions to install.

After you sign in, select your name in the upper right-hand corner, and then select Order History.

If you get an error that the file can't be opened because it's an unknown developer, wait about 20 seconds, drag the file to your desktop, and then hold the Control key as you click the file to open it. Here's how to view your product key in the Microsoft Store: Go to In the upper right-hand corner, select Sign in and enter the user ID and password you used to buy Office.

Open your Downloads folder and double-click the file called something similar to Microsoft Office-Installer.pkg.

Type cmd into the Windows 10 desktop search box and then right-click the command line result and select.

If you haven't yet purchased Office, click Buy Office at the top-right corner first, and then follow the on-screen steps to make your purchase. The most direct method for finding your Windows 10 product key is from the command line.

If you don't see this option and are signed in through a business account, go to instead. This is usually your Microsoft account, but if you got Office through your employer or school, you may need to use that account info.

If you're not signed in, click Sign in to sign in with the account associated with Office. X Trustworthy Source Microsoft Support Technical support and product information from Microsoft. Find your Office product key Office 365 Office 2019 Office 2016 Office 2013 Many tasks for Office products don't require a product key because your Microsoft account takes care of them instead.

If you haven't already done so, you'll need to install and redeem Microsoft Office before you can activate it.

Find microsoft office product key