Causes of Error Code 45 in Kaspersky Antivirus:
- Error Code 45 in Kaspersky Antivirus 2017 may be cause of Incomplete installation or faulty download.
- Corruption in Windows registry because of uninstallation or installation of Kaspersky Anti-Virus.
- Virus or spyware infection which has infected MS Windows system files and program files associated with the Kaspersky Anti-Virus.
- Another program mistakenly removed the Kaspersky Anti-Virus files.