Schneider encourages moving to (formerly Citect 2018 or 2021). These newer versions can often open and convert 7.3 projects. By upgrading, you avoid the hunt for old media.
Before initiating the download, verify that your hardware and operating system can support the 7.3 architecture. This version was designed during the transition between 32-bit and 64-bit systems. vijeo citect 7.3 download