1] Check if your Microsoft (Office) 365 Subscription is Active. If you have an Office subscription, you first need to check if the license is still active.

Learn how to activate Microsoft Office 2024/2021/19/16 or Office 365 on Windows 11/10 using a valid Activation Product Key. Also check Office Activation status first.

Stop paying $10 a month for Microsoft 365 — get Microsoft Office 2024 for a one-time fee and use Word, Excel, PowerPoint, and OneNote for life.

Currently, Microsoft claims it has more than 100 million active Office 365 business customers. These users are not licensing a single product, but various components of a broad suite of servers ...

But with older versions of Windows and with Microsoft Office, a product key is required. For the latter, ... If you have a subscription to Office 365, you don't need a product key.