Locate your antivirus icon in the system tray (bottom-right corner of the taskbar).
Antivirus software, including Windows Defender, can mistakenly identify the Adobe installer as a threat or block its file integrity checks, leading to the "damaged" error. adobe damaged installer fix photoshop windows 7 top
Windows 7 originally used SHA-1 code-signing certificates. Modern Adobe installers use . Without the SHA-2 update, Windows 7 thinks Adobe’s digitally signed installer is tampered with (damaged). Locate your antivirus icon in the system tray
If the error message is "Installer failed to initialize," leftover files from previous versions may be the cause. including Windows Defender
The "damaged installer" error on Windows 7 often stems from expired digital certificates conflicting background processes