Kaspersky Error Installing Driver Klim6sys X64 Upd ((exclusive)) (2024)

The error installing the klim6.sys_x64 driver (often associated with Error 27300

) usually occurs because of leftover files from previous installations, conflicts with third-party network drivers, or a limit on the number of network filter drivers allowed by Windows. Recommended Solutions Clean Up Previous Installations : Use the official kavremover tool

to completely strip away traces of old Kaspersky versions. Run it as an Administrator, preferably in , then restart your computer. Manual Driver Removal

: If the error persists, you can manually delete the driver service using the Command Prompt (Admin): sc delete klim6 Try installing the application again. Check Third-Party Conflicts : Programs that use NDIS filters (like Cisco AnyConnect kaspersky error installing driver klim6sys x64 upd

) can interfere. Try updating or temporarily uninstalling these applications to resolve the conflict. Fix Registry Issues (Windows 7/8 only) : If you are on an older OS, navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network in the Registry Editor and rename the parameter to , then restart. Disable Driver Signature Enforcement : For certain error codes (like 2146500025

), you may need to temporarily disable driver signature verification through Windows advanced startup settings before retrying the installation. Update Root Certificates

: Ensure your Windows is fully updated. If updates are restricted, manually update the root certificates to ensure the installer's digital signature is recognized. Proactive Troubleshooting If these steps do not work, check your Base Filtering Engine (BFE) service in services.msc The error installing the klim6

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?

Error 27300 when installing a Kaspersky application for home

Here’s a useful troubleshooting post for the Kaspersky error installing driver klim6.sys (x64) during update — typically seen on Windows 10/11. Solution 7: Modify the Registry to Remove Stale

Solution 7: Modify the Registry to Remove Stale Driver Entries

Warning: Incorrect registry edits can damage your OS. Back up your registry before proceeding.

Steps:

  1. Press Win + R, type regedit, press Enter.
  2. Navigate to: 
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
  3. Look for any key starting with KL or klim6. Delete:
  4. Also check: 
    HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\KasperskyLab
  5. Delete the entire KasperskyLab folders.
  6. Reboot and reinstall.

Solution 1: Use the Official Kaspersky Removal Tool (kavremover)

Most driver conflicts stem from incomplete uninstalls. Kaspersky provides a dedicated tool called kavremover to wipe all traces of its software from your system.

Steps:

  1. Download the official kavremover.exe from Kaspersky’s support website.
  2. Boot Windows into Safe Mode (hold Shift while clicking Restart, then go to Troubleshoot → Advanced Options → Startup Settings → Restart → Press 4 or F4 for Safe Mode).
  3. Run kavremover.exe as administrator.
  4. In the security code field, enter the CAPTCHA shown.
  5. Select your installed Kaspersky product from the dropdown (or select “All Kaspersky products”).
  6. Click Remove.
  7. Wait for the process to complete (it may take 2-5 minutes).
  8. Reboot normally and attempt a fresh Kaspersky installation.

Why this works: Kavremover deletes the problematic klim6.sys driver file from System32\drivers and removes all associated registry keys that cause version mismatch errors.

Comprehensive Write-Up: Kaspersky Error Installing Driver klim6.sys (x64) on Update/Installation

2.1. Conflicting Third-Party Security Drivers

1️⃣ Basic first steps

4.8. Disable Driver Signature Enforcement (Temporary)