Here are the most effective methods, ordered from simplest to most advanced. 1. Run the Kaspersky Removal Tool (Clean Reinstallation)
If the installer cannot replace the file because it is locked, you can manually remove it. Navigate to C:\Windows\System32\drivers . Locate the file named klim6sysx64.sys .
Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network Look for a value named MaxNumFilters . error 27300 error installing driver klim6sysx64 exclusive
If you are trying to install or update Kaspersky antivirus software and encounter the dreaded you are not alone. This is a common, frustrating issue where Kaspersky’s NDIS network filter driver fails to load properly, often accompanied by the message that the driver is in an "exclusive" state or blocked.
Download the specialized . Boot your computer into Safe Mode . Here are the most effective methods, ordered from
The "klim6.sys_x64" is not the software itself but a specific Windows driver file (also known as the ) that the security application tries to install. The x64 designation signifies it is for 64-bit versions of Windows. This driver acts as a filter at a very low level of the system network stack to scan all incoming and outgoing data for threats.
Once successful, you can disable the master account by running: net user administrator /active:no Use code with caution. Conclusion Navigate to C:\Windows\System32\drivers
This article provides a comprehensive guide to troubleshooting and resolving this error, ranging from simple reboots to advanced command-line interventions. What is klim6.sys ?
A broken Catroot2 database preventing Windows from verifying the digital signature of the Kaspersky driver.
Windows incorporates a security feature called Driver Signature Enforcement, which only allows drivers that have been digitally signed by Microsoft to be loaded. In some cases, this security feature can be overzealous and block the klim6.sys_x64 driver if it is not recognized, or if its signature cannot be verified due to a system certificate error, causing the installation to fail with a 27300 error.
Ensure you're downloading the latest version of Kaspersky from the official website. Sometimes, older versions or corrupted downloads can cause installation issues.
