Second Solution:This is actually a macOS Gatekeeper issue try these steps:To resolute Gatekeeper issues on macOS Sierra you might have to partially or completely disable Gatekeeper checks.Option IFor a certain application run in Terminal:sudo xattr -rd com.apple.quarantine /Applications/[LockedApp].app OR (AdobeZii20205.0.3.app)OR You need to rename the .dmg file to anything without spaces for example (AdobeZii20205.0.3.dmg) then place it inside of /Applications (so it’s easier file path)…like thissudo xattr -rd com.apple.quarantine /Applications/AdobeZii20205.0.3.dmgOption IITo disable checks globally run in Terminal: sudo spctl –master-disable