Error 27300 Error Installing Driver Klim6sysx64 Exclusive |work| »

A: No. It is a legitimate Windows installer error. However, some malware uses driver names similar to klim6 to hide. Always download Kaspersky from the official website.

Elevated permissions flow

Windows restricts drivers that lack a valid digital signature. Methods to Fix Error 27300 (klim6.sys_x64_exclusive)

Always ensure your Windows Updates are current before installing security software, as Kaspersky relies on specific Windows digital signature verifications that are updated through Microsoft.

Download and run the official Kavremover tool to purge all traces of previous Kaspersky products. Restart your computer immediately after the tool finishes. error 27300 error installing driver klim6sysx64 exclusive

Some software packages come with a built-in troubleshooter for driver installations. Check if such a tool is available for your Klim6sysx64 exclusive driver.

The term exclusive in the log indicates that the installer’s MoveFile or CreateFile call failed with:

Error typically occurs during the installation of Kaspersky software when the system fails to install the klim6.sys (Kaspersky Anti-Virus NDIS Filter) network driver. This is often due to existing driver conflicts, leftover files from previous installations, or an overloaded NDIS filter limit in Windows. Recommended Troubleshooting Steps

The file is Kaspersky 's proprietary Anti-Virus NDIS Filter driver, which manages network interception, firewall configurations, and web traffic filtering. When Windows marks this driver installation as "exclusive" or blocked, it means a conflict in the Network Operating System layer or a corrupted cryptographic repository is stopping the driver registration. Root Causes of Error 27300 Always download Kaspersky from the official website

: Corruption in Windows core networking features prevents third-party NDIS filter injection.

If you are encountering this error, follow these verified steps: Connect a Physical Keyboard

Error 27300 is a – not a standard Windows error code. It typically appears in:

Since klim6sysx64 is a network driver, an outdated network card driver can cause conflicts. Right-click Start, select . Expand Network adapters . Right-click your network adapter and select Update driver . 5. Disable Driver Signature Enforcement (Temporary) Download and run the official Kavremover tool to

Double-click MaxFilters , switch the base to , and set the value data to 14 . Click OK and close the Registry Editor. 4. Reinstall Overlapping Virtual Network Software

If the error persists, ensure that you have and that no other third-party firewall or antivirus (like McAfee or Norton) is currently active. These often "lock" the network stack, preventing the klim6 driver from installing exclusively.

"Error 27300. Error installing driver 'klim6sysx64' (exclusive)."