The Hosts file cannot block Adobe's Core Sync process entirely because it uses hardcoded IPs. You must also block the app manually:
Type the following command and press Enter: sudo nano /etc/hosts hosts file entries to block adobe activation mac better
With these blocks, Creative Cloud desktop app cannot check for updates. You must manually download installers from Adobe’s website or re-enable hosts temporarily to update. The Hosts file cannot block Adobe's Core Sync
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder you have succeeded.
If you see ping: sendto: Host is down or 127.0.0.1 , you have succeeded.