Kaspersky Error 27300 Klif.sys-x64 Jun 2026

If essential Windows deployment files are corrupted, the operating system will reject new third-party kernel drivers. You can repair these files using built-in command-line tools. Type cmd in the Windows search bar. Right-click and select Run as administrator . Type the following command and press Enter: DISM.exe /Online /Cleanup-image /Restorehealth Use code with caution.

Corrupted system files can cause this error. To check and fix them:

Warning: Back up the registry before proceeding. kaspersky error 27300 klif.sys-x64

If you previously had other antivirus software, their own filter drivers remain active and conflict with klif.sys . Use the tool from Microsoft Sysinternals.

: In some specific server environments, the error can trigger if a keyboard is not detected during installation. Permissions/System Corruption : Windows is unable to write the driver to the C:\Windows\System32\drivers folder due to permission issues or corrupted system files. How to Fix It Kaspersky Removal Tool (kavremover) If essential Windows deployment files are corrupted, the

Sometimes, Windows aggressively blocks the installation of third-party kernel drivers as a false-positive security measure. Disable Windows Defender Real-Time Protection Open via the Start menu. Go to Virus & threat protection > Manage settings . Toggle Real-time protection to Off . Disable Driver Signature Enforcement (Temporary)

Several factors can contribute to the occurrence of this error. Some of the common causes include: Right-click and select Run as administrator

| Cause | Description | |-------|-------------| | | Remnants of McAfee, Norton, Avast, AVG, or even older Kaspersky versions block the new driver installation. | | Windows Driver Signature Enforcement | Kaspersky drivers are signed, but if signature enforcement is disabled or corrupted, Windows rejects the driver. | | Corrupt Windows Installer or MSI cache | The MSI installer fails to write the driver to C:\Windows\System32\drivers\ . | | Insufficient permissions | The installer lacks SYSTEM or Administrator privileges to write to protected directories or registry keys. | | Conflicting security software | Active competing antivirus or Windows Defender (real-time protection) locks the driver file. | | Missing system files | Corrupted ntoskrnl.exe or driver framework files. | | Pending file rename operations | A stalled reboot or pending driver deletion from a previous uninstall. |

Ensure your operating system is fully updated. Missing security certificates or root updates can cause Windows to reject the digital signature of the driver, leading to a rollback and Error 27300. Verify Hardware Connection (Servers)

Hold the key while clicking Restart in the Windows Start Menu.

Because klif.sys acts as a network interceptor filter, a glitched network configuration can block it. Open as an administrator.