If you have a specific business or technical need to use this legacy software (for example, compatibility with an old proprietary system that cannot be updated), it is still possible to find the installer.
Adobe ended support for Acrobat/Reader 9 years ago. Unsupported versions have known security vulnerabilities and no security updates. Only use Reader 9 offline or in isolated environments where security risk is acceptable (e.g., a legacy system or virtual machine). For general use, install the latest supported Acrobat Reader. download adobe acrobat reader 9
Historically, Adobe hosted all old readers on an FTP server. That FTP is now closed, but some mirror sites have preserved the files. Look for a file that matches this pattern:
ftp.adobe.com/pub/adobe/reader/win/9.x/9.5.5/enu/AdbeRdr955_en_US.exe If you have a specific business or technical
Crucial Security Step Before Running: After downloading any legacy installer, always: Only use Reader 9 offline or in isolated