Which (e.g., Allen-Bradley, Siemens, Modbus) are you trying to connect?
As detailed above, this is the most dangerous consequence. You are completely exposed to every new vulnerability discovered after your version's release.
"Unlocking the Full Potential of Kepware KepServerEX V6: A Comprehensive Guide"
The simplest and safest option is to download the official, fully functional trial version directly from the PTC/Kepware website. This demonstration software is not time-limited in its standard evaluation (typically 2 hours of runtime before needing a reset) and allows full access to all features for integration testing.
Students, researchers, and system integrators can often request official, extended demonstration licenses directly from Kepware or regional distributors for non-production educational use.