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You receive the following error message when you activate your Trend Micro Security:

This serial number works for another edition of Trend Micro security software

"This serial number works for another edition of Trend Micro security software. Get the right one here and try again."

This issue happens when you downloaded a version of the Trend Micro program that is incompatible with your serial number.


Download the correct installer from where your program was purchased:

For programs purchased from Best Buy (US)

Serial Number Download Installer
Serial Number Starts with 'TO/TA'

Internet Security for Best Buy

You can visit Best Buy's website if you need further assistance.

For programs purchased from Best Buy (US) Lite Version

Serial Number Download Installer
Serial Number Starts with 'TO/TA'
Lite Version (64-bit)

Internet Security for Best Buy Lite (64-bit)

Serial Number Starts with 'TO/TA'
Lite Version (32-bit)

Internet Security for Best Buy Lite (32-bit)

To know more about Trend Micro Security Lite for Windows bought from Best Buy, click here

For programs availed from your Internet Service Provider

Serial Number Download Installer
Serial number starts with 'TAEF'

Antivirus+ Security 64-bit

Antivirus+ Security 32-bit

Serial number starts with 'TOEF'

Internet Security 64-bit

Internet Security 32-bit

Serial number starts with 'TXEF'

Maximum Security 64-bit

Maximum Security 32-bit

For M1 subscribers encountering any issues, please contact their technical support.

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