Learn more about product keys, Workplace Discount Program, and volume licenses. Some Office 2019, Office 2016, and Office 2013 products come with a product key. If yours did, before installing Microsoft 365 for the first time, sign in with an existing or new Microsoft account and enter your product key at office.com/setup.

A Subscribed badge means a Microsoft 365 subscription such as Microsoft 365 Family or Personal is already associated with your account and you can access many of your subscription benefits including installing the desktop apps.

Installation media, such as a USB flash drive, can be used to install a new copy of Windows, perform a clean installation of Windows, or reinstall Windows. To create installation media, go to the software download website, where step-by-step instructions can be found.

Give your PC a Fresh Start. Resetting your PC lets you perform a clean reinstallation and update of Windows while keeping your personal data and most Windows settings intact. In some cases, a clean installation may improve your device's performance, security, browsing experience, and battery life.

If your PC is running low on free space, you might not be able to install important Windows updates, and your PC’s performance may be affected. Here are some ways to free up space so you can keep your PC up to date and running smoothly.

For more on freeing up space on your PC, see Free up drive space in Windows. Learn how to run a disk cleanup in Windows including deleting temporary and system files to free up disk space.

Call into a Skype for Business meeting on your mobile or other phone. Preload attachments for a Skype for Business meeting. Use Skype for Business from within Outlook on the web.

If you still need help, select Contact Support to be routed to the best support option. Learn how to cancel your Microsoft subscriptions such as Microsoft 365, Copilot Pro and Xbox. Troubleshoot issues if you can't cancel your subscription.

You get 1 TB of cloud storage with a Microsoft 365 subscription, and can back up and share your files and photos with friends and family across all your devices. Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.

Find out how to choose between the 64-bit or 32-bit version of Office. Get answers to some common questions about 32-bit and 64-bit versions of Windows.