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You may need to change your serial number for various reasons, including upgrading to a paid version or replacing an already expired license with a new one.

Reinstalling the program is not needed:

  1. Open Trend Micro, then click the expiry date you can see at the bottom.

    Expiration Date

  2. Click Change your serial number.

    Subscription Information

  3. Type your new serial number in the fields provided.

    Enter the Serial Number

  4. Click Next, then click Close.

For other devices

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