You can download the current free version (v2.5.7) directly from the EasyObdII Free Software Page .
: Some earlier versions of the software, specifically version 2.4, have been released as open-source freeware to allow users to test compatibility before purchasing a full version. Core Diagnostic Capabilities
A: Yes, but you must run the installer in Windows 7 compatibility mode and disable driver signature enforcement temporarily.
Instead, download or ScanMaster-ELM — both safe, legal, and actually work better with today’s vehicles (including CAN bus and newer protocols). Your laptop (and car’s ECU) will thank you.