Kaspersky Error 27300 Klif.sys-x64 (FREE • WORKFLOW)

Click on the menu at the top and select Show hidden devices .

In essence: Kaspersky cannot load its main protection driver (klif.sys) into the Windows kernel.

Type in your Windows search bar, right-click it, and select Run as Administrator . kaspersky error 27300 klif.sys-x64

Restart your computer normally and attempt the installation again. 2. Remove Conflicting Third-Party Security Software

Look for any old security software (e.g., McAfee, Norton, Avast, or Malwarebytes). Uninstall them completely. Click on the menu at the top and select Show hidden devices

If you've tried all the above and still get the error, it's time to collect more information for Kaspersky Support:

Once the installation finishes, re-enable verification by running bcdedit /set nointegritychecks off in Command Prompt and restarting again. 4. Check for Windows Updates Restart your computer normally and attempt the installation

This error indicates that the installer cannot properly register or write the core Kaspersky Interceptor Driver ( klif.sys ) to your Windows system directory. Because this driver is critical for real-time file monitoring, the entire installation fails and rolls back.