Type in your Windows search bar, right-click it, and Run as Administrator .
Virtualization software and enterprise VPNs heavily hook into NDIS layers.
Open regedit and navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network . Find the parameter and rename it to Config2 . Restart and attempt the install again. error 27300 error installing driver klim6sysx64 exclusive
: Issues with the Windows Cryptographic Services or the driver catalog database (catroot2) can prevent digital signature verification.
: Traces of previous Kaspersky installations or other antivirus software (e.g., McAfee) can block the new driver from installing. Type in your Windows search bar, right-click it,
To solve the problem, it helps to understand the components involved:
Error 27300 occurs during Kaspersky installation when the application fails to install the driver, which is part of the Kaspersky Anti-Virus NDIS Filter . This driver intercepts network packets to protect your system, but installation often fails due to leftover traces from previous versions, conflicting third-party network drivers, or damaged system services. Top Recommended Solutions Find the parameter and rename it to Config2
If these methods fail, consider checking your Windows for pending updates, as a missing system update can sometimes cause driver installation problems. In rare cases, specialized rootkit scanners may be required to remove deeply embedded old driver files.
If the error persists, the physical driver file must be deleted manually. This requires booting into Safe Mode to bypass the "file in use" lock.
The klim6.sys file is Kaspersky’s , which intercepts and scans web traffic at the network adapter level to block malicious packets. The installation fails with an "exclusive" or numerical error code (such as -2147024770 or 2147024894 ) due to specific system bottlenecks: