Invalid Serial Number

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  • Updated 2 years ago
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I keep getting told my serial number is invalid. why?
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Posted 2 years ago

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Photo of TM_Malik


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Hi, mtrinkaus. Welcome to the Community!

Are you currently installing on a new PC or reinstalling the protection of your computer? There are two reasons for having the Invalid Serial Number Error message; first, you may not typed in the serial number correctly so you may just try again and second, you might not be installing the correct type of installer compatible for the serial number. For example, if your serial number starts with "X", the Trend Micro program that you need to install should be "Trend Micro Maximum Security".

You may visit this link for more information about the issue you are receiving.

Hope this helps. Thank you and have a great weekend!

Trend Micro Home Users Community

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