: Corruption in the Windows Catroot2 folder or issues with digital signature validation (Error 0x8000ffff).
Select the Kaspersky product you are trying to install from the dropdown menu. Click and wait for the process to complete.
⭐⭐ (2/5)
Error 27300 is a generic installation/uninstallation error code used by Kaspersky’s setup engine (based on the MSI installer framework). When accompanied by klif.sys-x64 , it specifically points to a failure in loading, registering, or removing the driver.
. This is usually caused by leftover files from previous installations or conflicts with network filter drivers from third-party software like VMware, Cisco AnyConnect, or WinPcap. 🛠️ Step 1: Clean Up Previous Installations kaspersky error 27300 klif.sys-x64
F. Check Windows system file integrity
Windows prevents the installation of a driver it considers unverified.
Under the tab, click Open Task Manager and disable all startup items.
Additionally, clear the MSI cache:
Only if you have the patience to debug driver issues – otherwise try a different AV that doesn’t trigger Error 27300.
If none of the above works, gather the following and open a ticket with :
Open the Command Prompt as an (Search for "cmd," right-click, and select "Run as administrator"). Type the following command and press Enter: sc delete klim6
If you've tried all the above steps and still encounter the error, it's time to contact Kaspersky's technical support: : Corruption in the Windows Catroot2 folder or
Since klif.sys acts as a network filter, a glitch in your network configuration can block its registration. Open as an Administrator.
Before diving into technical repairs, try these initial steps, as they resolve the error for many users.
A standard Windows uninstall often leaves files behind. Kaspersky provides a dedicated utility called Kavremover to wipe the slate clean.
