Before diving into technical solutions, perform these checks to avoid unnecessary risks:
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 KLIF (Kaspersky Lab Intermediate Filter) driver.
The full error message often reads:
Error 27300. Unable to load driver klif.sys-x64. Access is denied.
Or:
Error 27300. Unable to install driver klif.sys-x64. The system cannot find the file specified.
In some cases, the error appears during uninstallation, reading something like: kaspersky error 27300 klif.sys-x64
Error 27300. Unable to remove driver klif.sys-x64. The device is not ready.
If the installation files were downloaded incompletely or extracted to a temporary folder that was cleared, the klif.sys file might be corrupted or digitally unsigned, causing Windows to block the installation. Before diving into technical solutions, perform these checks
Before diving into technical solutions, perform these checks to avoid unnecessary risks:
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 KLIF (Kaspersky Lab Intermediate Filter) driver.
The full error message often reads:
Error 27300. Unable to load driver klif.sys-x64. Access is denied.
Or:
Error 27300. Unable to install driver klif.sys-x64. The system cannot find the file specified.
In some cases, the error appears during uninstallation, reading something like:
Error 27300. Unable to remove driver klif.sys-x64. The device is not ready.
If the installation files were downloaded incompletely or extracted to a temporary folder that was cleared, the klif.sys file might be corrupted or digitally unsigned, causing Windows to block the installation.