your antivirus program and Windows Firewall. Run the installer again.
This is the single most effective tool for wiping out remnants of failed or corrupted Adobe installations. Leftover files from a previous installation are a primary cause of "damaged installer" errors. adobe damaged installer fix photoshop windows 7 top
This bypasses the Windows security flag that marks the older Adobe files as unsafe. If that doesn't work, make sure you are running the file as ! your antivirus program and Windows Firewall