Software that uses NDIS filters—such as VMware, Cisco AnyConnect, or WinPcap—can conflict with Kaspersky's network filter drivers. Step-by-Step Fixes
The most reliable first step is using Kaspersky’s own tool. It forcibly cleans all remnants of Kaspersky drivers, including klif.sys . kaspersky error 27300 klif.sys-x64
Only if you have the patience to debug driver issues – otherwise try a different AV that doesn’t trigger Error 27300. Software that uses NDIS filters—such as VMware, Cisco
Error 27300 when installing a Kaspersky application for home Only if you have the patience to debug
: Surprisingly, this error can trigger on servers if a physical or virtual keyboard is not detected during the installation process.
Ensure your operating system is fully updated. Missing security certificates or root updates can cause Windows to reject the digital signature of the driver, leading to a rollback and Error 27300. Verify Hardware Connection (Servers)
The error occurs primarily due to a conflict or corruption within the operating system's driver catalog or cryptographic services. Key triggers include: