Error 28201 Kerio Vpn Client ((install)) May 2026

: The system believes the device is already registered, preventing a fresh installation. Step-by-Step Solutions 1. Perform a Clean Cleanup with KT Uninstaller

: Open Device Manager, expand Network adapters , and uninstall the Kerio Virtual Network Adapter . If you see WAN Miniport adapters, uninstall those as well. error 28201 kerio vpn client

Perform the cleanup for both versions to ensure all registry entries are wiped. Restart your computer immediately after the cleanup. 2. Manually Remove Drivers and Registry Keys If the uninstaller fails, manual intervention is required: : The system believes the device is already

: Leftover configurations from old versions interfering with new driver registration. expand Network adapters