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If you're seeing an "Invalid Activation Code" error while trying to activate Trend Micro Maximum Security, Internet Security, or Antivirus Plus Security on your Windows device, follow these steps to resolve the issue.

Error Messages You Might See:

"You have not provided a valid activation code."
"Invalid Activation Code."

Why Did This Happen?

You may have typed your activation code/serial number incorrectly, or perhaps you've got a new one for your subscription.

How Do I Fix This?

Try these steps first:

  1. Check your activation code:
  2. Enter your activation code carefully: Ensure there are no typos or extra spaces.


If you still see an error, try these steps:

  • If you are a new user, create a Trend Micro account:
    1. Go to Trend Micro Account Setup.
    2. Select Get Started.
    3. Enter your email or mobile number, then click Next.
    4. Create a password, then click Next again.
    5. Complete your profile details.
    6. Enter your activation code and return to the Trend Micro installation window to re-enter the code.
  • If you already have a Trend Micro account, sign in again:
    1. Click Sign In.
    2. Enter your email and password.
    3. Follow the prompts to activate your protection.
  • If you have a new activation code, register it:
    1. Go to Trend Micro Account Setup.
    2. Select Get Started.
    3. Sign in with your email or phone number and password.
    4. Enter the new activation code and return to the Trend Micro installation window to re-enter it.

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  • Remote Assistance: Let our experts take care of the installation REMOTELY✨, ensuring it's done perfectly and without hassle.
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