1. Open terminal Input
Sudo Rm-fr/library/preferences/parallels/licenses. xml
Rm-RfD/users /~ You ~ /Library/preferences/COM. parallels *"
Rm-RfD/users /~ You ~ /Library/preferences/parallels *
Sudo-s Rm-RfD/private/tmp/COM. Apple. installer *
Sudo-s Rm-RfD/private/var/root/library/preferences/COM. parallels. desktop. plist
Dscacheutil-flushcache
Sudo Rm-fr ~ /Library/logs/parallels. Log
Sudo Rm-fr/library/preferences/parallels/
Sudo Rm-fr ~ /Library/preferences/parallels
Sudo Rm-fr/private/var/. parallels_swap
Sudo Rm-fr/private/var/DB/parallels/stats
Sudo Rm-fr/private/tmp/qtsingleapp-Parall-c0ce-0-lockfile
Sudo Rm-fr ~ /Library/preferences/COM. parallels
(Terminal open method: press Ctrl + Space key to open spotlight, enter ter, and click the terminal displayed)
2. Open Parallels Desktop again. 8. Click get trial again.
3. During the trial application process, note that the entered email cannot be the same as the email at the previous trial.