Kaspersky Error 27300 Klif.sys-x64 Jun 2026

Type in your Windows search bar, right-click it, and select Run as Administrator .

Corruption in the operating system's cryptographic services or system files can prevent driver installation.

Expand the section (if visible) or look under System devices .

Several scenarios can trigger this error. The most common causes are: kaspersky error 27300 klif.sys-x64

Several underlying system conflicts can cause this installation failure:

This is a more direct method to fix issues with the catroot2 folder that stores driver signature catalogs, as suggested in official guides:

: Missing or corrupted core Windows components prevent standard driver registration routines. Step-by-Step Solutions to Fix Error 27300 Type in your Windows search bar, right-click it,

Are you trying to perform a or updating an existing Kaspersky app?

Ensure your Kaspersky software is up to date. Open Kaspersky, go to the "Update" section, and perform a manual update.

Restart your PC; Windows will automatically recreate a clean version of this folder, which may fix the driver registration issue. 3. Address Software Conflicts Several scenarios can trigger this error

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

: Windows cannot verify the digital signatures of the driver catalog because of a corrupted local certificate database.

Corrupted Windows system files can prevent driver registration. Use built-in Windows deployment tools to repair them.

Previous security software or virtual network drivers (VMware, Cisco AnyConnect) conflict with the new driver installation.