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.
Error 27300 when installing a Kaspersky application for home kaspersky error 27300 klif.sys-x64
The error 27300 typically occurs when there's an issue with the KLIF.SYS-X64 driver. Some common causes include: If the installation files were downloaded incompletely or
If the error is tied to driver validation, you may need to reset the Windows catalog database. Open the as an administrator. kaspersky error 27300 klif.sys-x64