“Invalid serial number” error message

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  • Updated 2 years ago
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I need help installing my security package. I have entered a number called activation code but it responds not valid.Where is the proper number located that I need.
Thank you.
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st77493

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Posted 2 years ago

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st77493

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This reply was created from a merged topic originally titled Steve.

I am attempting to install the internet security product we purchased from Best Buy. It is a asking for a serial number. The only number I see is the product activation code and it responds that it is invalid.
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TM_L, Official Rep

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We've merge your other post to this conversation since the contents are the same. I’ve also updated the title so it’s easier for other customers to find this conversation.
Thank you for purchasing our product! For your situation, we have a previous community discussion on exactly the same "serial number is invalid" issue that should help you:
Why is the serial number/activation key that you gave not working? It says the the four letters are not correct 

Please let us know if this community discussion matches your situation and resolves your issue. If not, please reply and we'll help you further. Thanks!

Trend Micro Home Users Community
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gaelwhite

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The Product Serial number is correct, but is not recognized by the installation program.
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Hi @gaelwite, thanks for contacting!

For your issue, using the serial number to activate a wrong Trend Micro program can also result in getting the error message. Serial numbers follow a different format for each program depending on how you acquired the serial number.

Please check your serial number format and download the correct installer file by clicking on the program below:

For Internet Security (Serial Numbers starting with "P")
Installing Internet Security 2017

For Premium Security/Maximum Security (Serial Numbers starting with "X")
Installing Premium Security 2017
Installing Maximum Security 2017

For Antivirus+ Security (Serial Numbers starting with "A")
Installing Antivirus+ Security 2017

For Antivirus for Mac (Serial Numbers starting with "M")
Installing Antivirus for Mac 2017

If you're still seeing the expiration error message, please provide a description or picture of the message, we'll be glad to assist you. Thanks.

Trend Micro Home Users Community

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