HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations
In this long-form guide, we will explore what error 27300 means, why the klif.sys-x64 driver is critical, what causes the problem, and how to fix it step-by-step on Windows 10 and Windows 11 (64-bit systems). 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. kaspersky error 27300 klif.sys-x64
This error can prevent you from installing, removing, or properly running Kaspersky products. It can also trigger system instability, blue screens, or failure of real-time protection. The good news is that this error is well-documented, and solutions exist—from simple driver fixes to advanced system modifications. This error can prevent you from installing, removing,