Traces of previous Kaspersky installations or other third-party security software can conflict with new drivers.

Corrupted Windows system files or a corrupted Windows Registry can prevent new service keys from being written to HKLM\SYSTEM\CurrentControlSet\Services .

Kaspersky Error 27300 typically occurs during the installation or upgrade of Kaspersky products when the system fails to install the driver (Kaspersky Log Inspection Filter)