Kaspersky Error Installing Driver Klim6sys X64 Upd Jun 2026
If none of the above solutions work, these advanced methods are available:
Sometimes the "UpperFilters" or "LowerFilters" in the Windows Registry still point to the klim6 driver, causing the installer to think it’s already active. Press Win + R , type regedit , and hit Enter.
The underlying problem stems from broken cryptographic services, conflicts with residual files from previous security installations, or corrupted network configurations within the Windows registry.
Standard Windows uninstallation utilities regularly fail to clear kernel-level drivers. You must deploy official cleanup tools to completely scrub your machine.
Kavremover deletes the problematic klim6.sys driver file from System32\drivers and removes all associated registry keys that cause version mismatch errors. kaspersky error installing driver klim6sys x64 upd
The klim6.sys file is a proprietary x64 Network Data Interface Specification (NDIS) filter driver used by the Kaspersky Lab installation engine. It intercepts network traffic at the kernel level to enable features like the firewall, network attack blocker, and web protection. When the Windows Network Setup Service or CryptoAPI cannot properly inject or sign this filter, the installation rolls back entirely to preserve system integrity.
Download the latest Kaspersky installer directly from the official website after cleanup – never use an old offline installer, as it may contain an outdated version of the klim6.sys that your updated Windows no longer accepts.
By following these steps, you should be able to resolve the error and successfully install your Kaspersky software to keep your system fully protected.
This is the most reliable fix for installation loops caused by leftovers. If none of the above solutions work, these
The core of the issue revolves around a critical file named (or its 64-bit variant, klim6.sys_x64). This file is the Kaspersky Anti-Virus NDIS Filter , a low-level network driver. Its primary function is to intercept network packets flowing between your computer and the internet. It uses a technology recommended by Microsoft called the "NDIS Intermediate Driver" to embed itself into the network stack of the operating system. This allows Kaspersky applications to scan web traffic, block malicious sites, and filter network activity in real time, providing a critical layer of protection.
Navigate to the official download page for the Kaspersky Removal Tool (kavremover). Run the executable file as an administrator.
Select the version you are trying to install/remove and click . Restart your computer in normal mode.
Incorrect registry edits can damage your OS. Back up your registry before proceeding. The klim6
If you have completed all the steps above and are still receiving the klim6.sys driver error, your operating system may have underlying system file corruption or corrupted network registries.
In this article, we'll provide a detailed guide on how to troubleshoot and resolve the Kaspersky error installing driver klim6sys x64 upd. We'll cover the possible causes, step-by-step solutions, and preventive measures to ensure a smooth installation or update process.
If the installer fails at driver loading, you can attempt to manually pre-install the driver: