Adobe ended support for CS4 in 2012. That means there are for known vulnerabilities. If you manage to run the portable version, you are exposing your system to exploits that hackers have been perfecting for over a decade.
Adobe still provides a special CS4 installer for paying customers with legacy licenses, but it requires activation servers (which are shut down). Do not pay for a used CS4 license—it will not activate. i--- Adobe Indesign Cs4 Portable Mega
: Distributing or using cracked software violates Adobe's End User License Agreement (EULA) and intellectual property laws. Compatibility Table Adobe InDesign CS4 (Official) "Portable Mega" Version Discontinued/End-of-Life Unofficial Repack No longer supported by Adobe No support available OS Compatibility Windows XP/Vista/7 Highly unstable on Win 10/11 Safe (if original media) (Malware/Viruses) Professional Recommendations Adobe ended support for CS4 in 2012