How to Fix Kaspersky Error 27300 (klif.sys-x64) The typically occurs during the installation or upgrade of Kaspersky security products, such as Kaspersky Internet Security , Kaspersky Total Security, or Kaspersky Endpoint Security. This error indicates a failure to install a specific driver—most commonly klif.sys-x64 (Kaspersky Lightweight Inspection Framework)—which is critical for the software's real-time protection. Primary Causes of Error 27300
The core issue stems from Windows rejecting or failing to register a foundational kernel-level driver used by the software. What is klif.sys?
If none of the above steps resolve the issue, it may be a more complex problem that requires professional assistance. Contact Kaspersky's customer support for personalized help.
Based on user reports, forums, and Kaspersky's support resources, the following are possible causes of error 27300: kaspersky error 27300 klif.sys-x64
Press Win + R , type appwiz.cpl , and press to open Programs and Features.
Standard uninstallation often leaves behind deep-seated registry keys or driver files that trigger this error during a reinstall. Download the official kavremover tool . Run the tool as an .
Warning: Back up the registry before proceeding. How to Fix Kaspersky Error 27300 (klif
If you have software that creates virtual network adapters, it may interfere with klif.sys . Temporarily uninstall VMware. Cisco AnyConnect: Uninstall the client.
If system files are corrupted, the driver cannot load into the kernel.
Corrupted Windows system files can prevent the operating system from verifying or writing new kernel drivers. Type cmd in the Windows search bar. Right-click and choose Run as administrator . What is klif
The klif.sys file is a critical component of Kaspersky security software. It is a kernel-mode driver responsible for network traffic filtering and file system monitoring, ensuring that the antivirus can intercept threats before they harm your system. The _x64 indicates it is specifically for 64-bit Windows operating systems. Root Causes of Error 27300 klif.sys_x64
How to Fix Kaspersky Error 27300: klif.sys-x64 The is a critical installation failure that completely halts the deployment of Kaspersky security products. This error impacts both home consumer applications (like Kaspersky Standard, Plus, or Premium) and enterprise software (such as Kaspersky Endpoint Security for Windows ).