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Your activation code (also called a product key or serial number) is used to activate your Trend Micro subscription. Select your purchase type from the table below to find exactly where your code is and what to do if it’s missing.

Quick‑Look Table

How You Bought It Where to Find Your Code If You Can’t Find It
Store (Retail Box) Inside the box or on your receipt. Call the store where you purchased.
Online (Trend Micro website) Check Trend Micro email within 15 minutes. Check Spam/Junk and Gmail Promotions tab. Contact Support to Resend Activation Code
In-App Purchase No code needed. Sign in with account used for purchase. Ensure you’re signed in with the same purchase account.
From Your Internet Provider (ISP) Log in to ISP account to find your code Contact your ISP’s customer service.
Best Buy Purchases Check Best Buy email in mailbox. Contact Best Buy's Geek Squad.
Renewal Use the same activation code as before. Contact Support if still expired after 48 hours

Detailed Instructions by Purchase Type

  1. Store (Retail Box)
    • Look inside the packaging.
    • Some retailers print the code on the receipt.
    • Keep your receipt and packaging safe.
  2. Online Purchase from Trend Micro Website
    • Code is emailed within 15 minutes.
    • Check Inbox, Spam/Junk, Gmail Promotions tab.
    • Email Content:
      • Email Subject: Activate Your Subscription
      • Where to Check:
        • Inbox
        • Spam/Junk folder
        • Promotions (for Gmail users)

      Sample Email:

      Email with Activation Code

    • If not received after 1 hour, Contact Support to Resend Activation Code.
  3. In-App Purchase
    • No activation code required.
    • Sign in using the same account you purchased with.
  4. Purchase via Internet Provider
    • Log in to your ISP account.
    • If missing, contact ISP customer service.
  5. Purchase via Best Buy
  6. Renewed Subscription
    • Same activation code is used after renewal.
    • If still expired: Sign out/in of the Trend Micro app.
    • Check license is active online.
      1. Go to your Trend Micro Account here: https://account.trendmicro.com/.
      2. Log in with your credentials.
      3. Your activation code will be listed as Serial Number under the License tab.

        4. License Tab to look for Activation Code

    • Contact Support if still expired after 48 hours.
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