Hi @edp,
Welcome to Trend Micro Home Users Community!
May we know what is the name of the Trend Micro Product that you are trying to install?
If you are trying to install a Trend Micro for Home Product such as Trend Micro Antivirus + Security, Internet Security and Maximum Security, Windows 7 is no longer supported.
Reference: Trend Micro Security System Requirements for Windows | Trend Micro Help Center
However, if you are using Trend Micro for Business Products such as Apex One and Worry Free, please reach out to their dedicated support team for assistance. Kindly check the link below to contact their support team.
Trend Micro for Business | Contact Support
Hope this helps!