If you have software that creates virtual network adapters, it may interfere with klif.sys . Temporarily uninstall VMware. Cisco AnyConnect: Uninstall the client.
Error 27300 with klif.sys can be frustrating, but it is almost always solvable by fully removing old security software and performing a clean reinstallation of Kaspersky using their official removal tool.
The most frequent culprit is a corrupted registry key from an older Kaspersky version. Standard Windows uninstallation often leaves these behind. kaspersky error 27300 klif.sys-x64
Error 27300 when installing a Kaspersky application for home
Wait for the process to complete, restart your PC, and retry the installation. 4. Manually Remove the klim6 Driver If you have software that creates virtual network
: Previous installations of Kaspersky or other antivirus programs leave orphaned files or broken registry keys in the System32 directory, blocking new driver packages.
Corrupted Windows system files or a corrupted Windows Registry can prevent new service keys from being written to HKLM\SYSTEM\CurrentControlSet\Services . Error 27300 with klif
This error indicates Windows files related to driver security verification are damaged.
Troubleshooting Guide: Decoding Kaspersky Error 27300 (klif.sys-x64)
If the issue persists, try reinstalling Kaspersky: