If the error occurs on Windows 10/11:
If none of the above solutions work, it's best to contact Kaspersky support for further assistance. They can provide personalized help and guidance to resolve the issue.
Conclusion
The Kaspersky Error 27300: KLIF.SYS-X64 issue can be frustrating, but it's usually resolvable with some troubleshooting steps. By following the solutions outlined in this article, you should be able to resolve the error and get your Kaspersky antivirus software up and running smoothly. If you're still experiencing issues, don't hesitate to reach out to Kaspersky support for further assistance.
How to Fix Kaspersky Error 27300 (klif.sys-x64) The Kaspersky Error 27300 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
Several factors can trigger this driver installation failure:
Leftover Files: Traces of previous Kaspersky installations or other third-party security software can conflict with new drivers.
System File Corruption: Corrupted Windows system files or damaged cryptographic services can prevent drivers from being signed or registered.
Third-Party Conflicts: Network drivers from applications like VMware, Cisco AnyConnect, or WinPcap often conflict with Kaspersky’s NDIS filter.
Windows Update Issues: Missing critical OS updates or pending restarts can disrupt the driver installation process. Step-by-Step Solutions 1. Use the Kaspersky Kavremover Tool
Before attempting a fresh install, ensure all traces of previous versions are gone.
Download the kavremover tool from the official Kaspersky website.
Run the utility, select the product you are trying to install/remove, and follow the prompts. Restart your computer immediately after the tool finishes. 2. Clean the Windows Cryptographic Folders
If the error is related to digital signatures (often accompanied by code 0x8000ffff), you may need to reset the Windows Update catalog:
Error 27300 when installing a Kaspersky application for home
Blog Title: Troubleshooting Guide: Decoding Kaspersky Error 27300 (klif.sys-x64)
Published: April 23, 2026 | Category: Technical Support | Reading Time: 4 minutes kaspersky error 27300 klif.sys-x64
If you are reading this, you’ve likely just tried to install or update Kaspersky Endpoint Security or Kaspersky Internet Security, only to be met with a frustrating red box containing: “Error 27300. Failed to start driver. klif.sys-x64.”
Don’t panic. While this error looks like a complex registry meltdown, it is actually a very specific (and solvable) conflict between Kaspersky’s core driver and your Windows operating system.
Here is everything you need to know about what is causing the klif.sys error and how to fix it.
Conclusion
Kaspersky error 27300 related to KLIF.SYS-x64 can be resolved by updating or reinstalling Kaspersky software, running a system file checker scan, disabling conflicting software, or performing a clean boot. If none of these solutions work, you may need to seek further assistance from Kaspersky support or a professional technician. Remember to always keep your security software up-to-date to protect your computer from potential threats.
Additional Tips
Dealing with Kaspersky Error 27300 involving the klif.sys-x64 driver can be incredibly frustrating, especially when it halts your security setup. This error typically signifies a failure during the driver installation process, often due to remnants of previous software, system file corruption, or conflicts with other drivers.
Below is a comprehensive guide to understanding and fixing this specific issue. What is klif.sys-x64?
The klif.sys (Kaspersky Log Inspection Filter) file is a vital kernel-mode driver used by Kaspersky applications for real-time protection, such as monitoring file system activity and blocking rootkits. The "x64" suffix indicates it is the 64-bit version of this driver. When Error 27300 occurs, the Windows installer is unable to correctly register this driver into the system's driver stack. Common Causes of Error 27300
Kaspersky Error 27300 is a known installation or update failure tied to the klif.sys-x64 driver. This occurs when the installer cannot properly register or modify the core Kaspersky Interceptor driver file, usually due to lingering files or strict system permissions. 🛠️ Quick Solutions to Fix Error 27300
Run as administrator: Right-click your downloaded Kaspersky installer executable and click Run as administrator.
Run the kavremover utility: Download the official Kaspersky Removal Tool (kavremover) to completely wipe previous setup traces before trying a fresh install.
Disable conflicting software: Temporarily turn off active third-party firewalls or real-time antivirus shields that may be actively blocking klif.sys from writing to your operating system directories.
Check drive permissions: Navigate to C:\Windows\System32\drivers in your file explorer, find any existing instance of klif.sys, right-click it to check permissions, and ensure your admin account has complete read/write access.
Kaspersky Error 27300 related to klif.sys usually happens when the installer fails to load or update the "Kaspersky Log-In Filter" driver. This often occurs because of leftovers from a previous installation or a conflict with existing hardware drivers. Quick Fixes
Remove Old Remnants: Use the Kavremover tool from Kaspersky Support to completely wipe previous installation files that might be blocking the new driver. If the error occurs on Windows 10/11: If
Connect a Keyboard: Surprisingly, this error can trigger on servers if a physical or virtual keyboard is not detected during the installation process.
Update Your Version: Ensure you are downloading the most recent installer from the official Kaspersky website, as this specific bug has been addressed in newer builds. Advanced Steps
Check for Driver Conflicts: Ensure no other antivirus software is active.
Run as Administrator: Right-click the installer and select Run as Administrator to ensure it has the permissions needed to write to system folders like C:\Windows\System32\drivers.
Verify Disk Space: Ensure you have enough free space and that your computer meets all hardware requirements.
Error 27300 when installing a Kaspersky application for home
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)
. This driver is a core component that operates at the kernel level to monitor file system activity. Common Causes Driver Conflicts
: Residual files or drivers from a previous antivirus installation (including older Kaspersky versions) interfering with the new one. Missing Hardware
: 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)
Standard Windows uninstallation often leaves behind registry keys or drivers like that block new installs. Download the official kavremover tool from Kaspersky. Run the tool in to ensure all active drivers are stopped and wiped. Restart your computer and attempt the installation again. Check for Windows Updates
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)
If you are installing this on a server or a "headless" machine, ensure a physical keyboard is connected or emulated. Kaspersky's installer sometimes checks for human-interface devices as a prerequisite for certain driver hooks. Clean Temporary Files
Corrupted installation logs or temporary files can stall the process. Use the Windows Disk Cleanup
utility to empty the Recycle Bin and delete temporary setup files before retrying. Manual Driver Removal (Advanced) If the error persists, you may need to manually check if still exists in C:\Windows\System32\drivers
. If it does, and you have already uninstalled Kaspersky, you may need to rename or delete it (you might need to take ownership of the file first). Dealing with Kaspersky Error 27300 involving the klif
Error 27300 when installing a Kaspersky application for home
Resolving Kaspersky Error 27300: KLIF.SYS-X64 Issues
Kaspersky antivirus software is renowned for its robust protection against various cyber threats. However, like any complex software, it's not immune to errors. One such error that has been troubling users is the "Kaspersky Error 27300: KLIF.SYS-X64" issue. In this comprehensive article, we'll delve into the causes, symptoms, and most importantly, provide step-by-step solutions to resolve this error.
Understanding KLIF.SYS-X64
Before we dive into the error, it's essential to understand what KLIF.SYS-X64 is. KLIF.SYS, or Kaspersky Low-Level Intercept Filter, is a system driver used by Kaspersky antivirus to intercept and analyze system calls, helping to detect and prevent malicious activities. The "-X64" suffix indicates that this is a 64-bit version of the driver, designed for 64-bit Windows operating systems.
Causes of Kaspersky Error 27300: KLIF.SYS-X64
The error 27300 typically occurs when there's an issue with the KLIF.SYS-X64 driver. Some common causes include:
Symptoms of Kaspersky Error 27300: KLIF.SYS-X64
Users experiencing the Kaspersky Error 27300: KLIF.SYS-X64 may encounter the following symptoms:
Solutions to Resolve Kaspersky Error 27300: KLIF.SYS-X64
To resolve the Kaspersky Error 27300: KLIF.SYS-X64, try the following solutions:
Error 27300 is often an MSI error. Repair the installer service.
Steps (as Administrator in Command Prompt):
msiexec /unregister
msiexec /regserver
net stop msiserver
net start msiserver
Then run the Kaspersky installer again.
Additionally, clear the MSI cache:
del /f /s /q %windir%\Installer\$PatchCache$
Corrupt Windows files can block driver installation.
Before diving into technical solutions, perform these checks to avoid unnecessary risks: