Kaspersky Error 27300 Klif.sys-x64 [cracked] [2026]

Error 27300 a critical installation failure that occurs when the installer cannot correctly register or start essential system drivers

Q5: Can I install Kaspersky without the klif driver?

No. The product is non-functional without klif.sys. It is mandatory for real-time protection. kaspersky error 27300 klif.sys-x64

1. Open Command Prompt.
2. Type sc query klif (or sc query klif.sys-x64 depending on the version).
3. The state should be RUNNING.

1. Open Device Manager → View → Show hidden devices.
2. Expand Non-Plug and Play Drivers.
3. Find KLIF.
4. Right-click → Uninstall device (check “Delete driver software” if available).
5. Navigate to C:\Windows\System32\drivers\ and delete klif.sys (if present).
6. Open Regedit and delete:

   Conclusion

   The error 27300 is a critical failure that occurs when Kaspersky's kernel-mode driver, klif.sys, fails to load or function properly. The "-x64" suffix indicates that this error is related to the 64-bit version of the driver. Error 27300 a critical installation failure that occurs

   4. The "Manual Cleanup" (For IT Admins)

   If you are deploying via an enterprise console and the GUI keeps failing, you can bypass the GUI error by installing the driver manually via the command line. Open Command Prompt