How to Access Microsoft 365 Family on a New Computer Without a Product Key
Question details
The user needs to access and activate their existing Microsoft 365 Family subscription on a newly purchased computer but does not possess a physical product key.
- Product
- Microsoft 365 Family
- Device & OS
- not provided
- Scenario
- Setting up applications on a newly purchased device where a previous subscription needs to be transferred or activated.
- Observed behavior
- The user is unable to access the Microsoft 365 subscription because they assume a product key is required for activation on the new device.
Ensure you have the email address and password for the Microsoft account that is associated with your active Microsoft 365 Family subscription.
Install and Activate Microsoft 365 via Digital Licensing
Use this method to install Microsoft 365 directly from your Microsoft account dashboard, as modern subscriptions are linked digitally and bypass the need for a physical product key.
Microsoft 365 subscriptions utilize digital licensing that is attached directly to your Microsoft account. You do not need a 25-character product key to reinstall or activate your applications on a new device.
Open your web browser and navigate to the Microsoft Account Services page at https://account.microsoft.com/services.
Log in using the exact Microsoft account credentials (email and password) that own the Microsoft 365 Family subscription.
Locate your Microsoft 365 Family subscription in the list of services, select 'Manage', and then click the 'Install' button to download the setup file to your new computer.
Run the downloaded installer. Once the installation is complete, open any Office app (such as Word or Excel) and sign in with the same Microsoft account to automatically activate your software.
Try WPS Office for a Hassle-Free Experience on Your New PC
If you are struggling to recover your Microsoft account or prefer not to deal with subscription activations on your new computer, WPS Office is a fantastic, lightweight, and completely free alternative that works perfectly out of the box.
- 1. Download the Installer: Visit the official WPS Office website and download the free installation package tailored for your new computer.
- 2. Install WPS Office: Run the setup file and follow the straightforward on-screen prompts to install the suite in just a few minutes.
- 3. Start Creating: Open WPS Writer, Spreadsheet, or Presentation and immediately start working on your documents without worrying about subscription sign-ins.

Frequently Asked Questions
Why is my new computer asking for a product key for Microsoft 365?
Many new computers come with a pre-installed trial version of Office. If it prompts you for a product key, you can usually bypass this by selecting 'Sign in with an active account' and entering the credentials linked to your existing Microsoft 365 Family plan.
How do I share my Microsoft 365 Family subscription with another person?
Sign in to your Microsoft account dashboard, navigate to 'Services & subscriptions', click 'Manage' on your Family subscription, and select 'Start sharing'. You can then send an invitation via email or share a direct link.
Can I use Microsoft 365 on multiple computers at the same time?
Yes, a Microsoft 365 Family subscription allows you to sign in on up to five devices simultaneously. This makes it easy to transition to a newly purchased computer without having to manually deactivate the software on your old one.




