Activate Office - Microsoft Support
Learn how to activate Microsoft 365 or a non-subscription version of Office with a product key, a Microsoft account, or a trial version. Troubleshoot activation errors and get help with guided support.
Manage your Microsoft 365 subscription or Office product
Learn how to install, renew, cancel, or share your Microsoft 365 or Office product subscription. Find your product and select Manage to access your account dashboard and services.
Renew Microsoft 365 for personal or family use
Learn how to renew your Microsoft 365 subscription for personal or family use at Microsoft365.com/renew or with a 25-character product key. Find troubleshooting help, switch subscriptions, and manage your payment and installation options.
A subscription notice appears when I open a Microsoft 365 …
Learn how to resolve the Unlicensed Product error that appears when you open Word or other Office applications. Find out how to renew, activate, or enter a product key for your Microsoft 365 subscription.
How do I upgrade Office? - Microsoft Support
If you have a Microsoft 365 Family or Microsoft 365 Personal subscription, you already have the most current version of Office at no additional cost and should already receive the latest features to your Office apps.
Repair an Office application - Microsoft Support
Select the Microsoft Office product you want to repair and select Modify. Note: This will repair the entire Office suite even if it's just one application you want to repair such as Word or Excel. If you have a standalone app installed, then search for that application by name.
Problems sharing your Microsoft 365 Family subscription
Learn how to troubleshoot common issues with sharing your Microsoft 365 Family subscription, such as invitation not received, sharing not available, subscription expired, or product key used. Find out how to share your subscription with up to five …
Find out when your Microsoft 365 subscription expires
Learn how to check when your Microsoft 365 subscription expires by going to your Services & subscriptions page. See how to renew, turn off recurring billing, or cancel your subscription.
Command-line switches for Microsoft Office products
Learn how to use command-line switches to customize the startup process for Office apps, such as Word, Excel, PowerPoint, Outlook, and Access. See the list of switches and parameters for each Office product and how to create a shortcut for reuse.
Read the Software License Terms for Office - Microsoft Support
Learn how to use your Microsoft Office product legally according to the license terms. Find out how to activate your product key, view the license terms, and get support for Office installation issues.
Obtain a digital certificate and create a digital signature
Learn what a digital signature or ID is, how to get one from a certificate authority or create your own, and how to use it in Office documents. Find out how to view, add, or remove digital signatures and certificates in different versions of Windows and Office.