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If you bought a new activation code and want to replace the one currently on your device, this guide will walk you through the process step‑by‑step. The instructions are simple and work for all ages and experience levels.

📌 Before You Begin

Before changing the activation code on your device, you must first activate your new code through the Trend Micro Activation Portal. Here are the steps on how to do it:

  1. Go to the Trend Micro Activation Portal
  2. Click Get Started
  3. Sign in with your Trend Micro Account
  4. Enter your new activation code
  5. Agree to the Trend Micro License Agreement, then click Next.
  6. Fill up the details needed for auto-renewal enrollment
  7. Complete the activation process.
  8. After you complete the activation process, proceed with the device-specific instructions shown below.

🧩 Pre‑Checklist (Quick and Easy)

Before you continue, make sure:

  1. Your new activation code is already activated in the Activation Portal.
  2. Your activation code matches your Trend Micro product:
    • Premium Security Suite → Maximum Security installer
    • Maximum Security → Maximum Security installer
    • Internet Security → Internet Security installer
    • Antivirus+ Security → Antivirus+ installer
  3. Your device supports the product:
    • Internet Security & Antivirus+ → Windows only
    • Maximum Security → Windows, Mac, Android, iOS
    • Antivirus for Mac → Mac only
  4. You are signed in with the correct Trend Micro Account.


This quick check helps prevent most activation errors.

🎯 When and Why You Might Need to Change Your Activation Code

  • You bought a new subscription.
  • You renewed and received a new activation code.
  • You upgraded from Internet Security → Maximum Security (example only).
  • You installed the wrong Trend Micro product.
  • You want all your devices to use the same subscription.

Knowing the reason helps you choose the right steps.

⚙️ Steps to Change Your Activation Code

Choose the device where you want to change the activation code:

Expand All
💻 Windows PC
🍎 Mac
📱 Android
📱 iPhone / iPad
🔐 Other Trend Micro Apps (VPN, ID Protection, ScamCheck, Browser Extensions)

🛠 Need More Help?

If you still need help changing your activation code, contact Trend Micro Support.

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Keywords: change serial number, change activation code, update activation code, Windows, Mac, Android, iPhone, VPN, Chromebook, Trend Micro
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