Do download standalone .exe or .iso files from:
If the installer fails, try copying the installation files directly to a folder on your Desktop, rather than running it from a compressed folder, and run Set-up.exe from there. Alternative for 32-bit: If you cannot find a valid CS5 license, consider Adobe Illustrator Cs5 Windows 7 32 Bit Download
Before we dive into the download process, ensure that your system meets the minimum requirements for Adobe Illustrator CS5: Do download standalone
Adobe’s CS5 activation servers may have been retired. Solution: follow these steps:
Once you've downloaded the installation file, follow these steps: