If you find a random "PhysioEx91_Free_Crack.exe" on a sketchy forum, do not run it. That software is over a decade old (released ~2011). Any "free download" today is almost certainly a virus, keylogger, or crypto miner. I watched two classmates brick their laptops trying this.
If a User Account Control (UAC) prompt appears, click to grant permission. Select your preferred language and click Next . Read and accept the License Agreement. Physioex 9.1 Software Download
You can download the PhysioEx_9.zip file, extract its contents to your computer, and run the PhysioEx_9.bat file directly to launch the environment. If you find a random "PhysioEx91_Free_Crack