There is no one-size-fits-all answer to this question, as the removal process for a quarantined Trojan will vary depending on the specific quarantined Trojan and the computer it was installed on. However, some tips on how to remove a quarantined Trojan include using a malware removal tool such as Malwarebytes or HitmanPro, using an anti-virus software program such as Microsoft Windows Defender, or using a data recovery program like Data Recovery Wizard.