Kaspersky Error Installing Driver Klim6sys X64 Upd Work Jun 2026

Windows places a strict limit on the number of network filter drivers (MaxNumFilters) that can be active at one time.

Reinstall your VPN or virtualization software afterward. The drivers will order themselves sequentially without conflict. 5. Repair the Cryptographic Database

The is a critical installation failure that occurs when the Kaspersky setup wizard fails to register its Network NDIS Filter driver ( klim6.sys ) within the Windows networking stack. This issue forces an automatic installation rollback, preventing the deployment of Kaspersky Standard, Plus, Premium, or Kaspersky Endpoint Security (KES). What is the klim6.sys Driver?

The Kaspersky klim6.sys installation error is a common but solvable problem. Start with the simplest solutions (clean boot, Windows update) and work your way up. If these steps don't resolve the issue, the Kaspersky support site and forums are excellent resources. Additionally, consider these quick final checks to ensure a smooth installation: kaspersky error installing driver klim6sys x64 upd

The klim6.sys driver operates at the same level as other software that interacts with the network stack. When multiple such programs leave behind their own drivers or entries, they can conflict. According to Kaspersky, the known problematic applications include:

The is a severe installation block that completely halts setup and rolls back all system modifications. This error surfaces when the software attempts to integrate its proprietary network interceptor driver, klim6.sys , into your 64-bit Windows network architecture. Because this driver operates as an NDIS network filter, any underlying operating system corruption, conflicting software, or legacy registry entries will cause the installer to abort.

Are you encountering the frustrating "Kaspersky error installing driver klim6sys x64 upd" while trying to install or update Kaspersky antivirus software on your Windows system? You're not alone. This error can be a significant roadblock, but don't worry; we've got you covered. In this comprehensive guide, we'll walk you through the possible causes, troubleshooting steps, and solutions to resolve the klim6sys x64 upd driver installation error. Windows places a strict limit on the number

When you see an error message like "Error 27300. Error installing driver klim6.sys_x64," it means the installer has attempted and failed to properly place and register this filter driver into the Windows system core (the C:\Windows\System32\drivers folder). This failure isn't just a minor inconvenience; it prevents the core network protection features of Kaspersky from functioning correctly, often leading to an aborted installation.

Windows may think it’s waiting to rename or delete the old driver.

to ensure it is running, as Kaspersky requires it to install network drivers. Are you seeing a specific numerical error code (e.g., 27300: 2147024894) alongside the driver message? What is the klim6

If nothing works, the Windows driver store may be irreparably corrupted. An in-place upgrade (repair install) fixes this without deleting your apps.

Real-time protection from Windows Security can interfere with driver installation.

Error 27300 when installing a Kaspersky application for home

A standard uninstall through the Control Panel often leaves the klim6.sys driver behind in the Windows drivers folder. Kaspersky provides a specialized utility called to wipe these stubborn leftovers.