Where is my 25 digit product key for publisher license I bought?

The location of the 25-character Publisher key depends on where and how it was purchased: check Microsoft Store Order History for a direct purchase, or obtain it from the retailer if purchased elsewhere.

If purchased directly from Microsoft Store

1. Sign in to the Microsoft Store website using the same Microsoft account used for the purchase.
2. Select your name in the upper-right corner, then Order History.
3. Locate the Publisher, individual Office app, or Office one-time-purchase order.
4. Select Install Office or Product key/Install. This displays the key without immediately installing Office. The key has this format:
   XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
   ^1^ ^2^

If Product key/Install is absent:

• Select Install if that is the only option; the purchase might use account-based activation rather than a separately displayed key.
• Open the order itself and check its product page.
• Check the purchase-confirmation email for an Install Office option. ^2^

If Publisher is already associated with your account

For many Office purchases, the Microsoft account replaces the product key for installation and activation. Sign in to the Services & subscriptions section of the Microsoft account used for the purchase, locate the product, and select Install. The complete key is not displayed inside Publisher; File > Account can show the account listed after Belongs to. ^1^

If purchased from another retailer

• Physical key card: Carefully scratch off the silver coating on the back to reveal the 25-character key.
• Boxed copy: Check the card, packaging, or installation instructions.
• Digital third-party purchase: Check the retailer’s confirmation email, account/order page, or contact that retailer. Microsoft directs customers back to the third-party seller for download and key information. ^1^ ^2^

If the key is missing from a qualifying Microsoft Store order and neither the order nor confirmation email provides an installation option, use Contact Microsoft Support from the download and installation support page. Keep the receipt and order details available. ^2^

References

1. Using product keys with Microsoft 365 | Microsoft Support
2. Find and install your Microsoft downloads from Microsoft Store | Microsoft Support