Resolving Error 28201 with Kerio VPN Client: A Step-by-Step Guide

Step 2: Verify Network Connectivity

  1. Ensure your internet connection is stable and working correctly.
  2. Try accessing other websites or online resources to verify your network connection.
  3. If you're on a wireless network, try switching to a wired connection to rule out wireless issues.

Uninstall Client: Go to Windows Settings > Apps & Features and uninstall any existing Kerio VPN Client.

Possible Causes:

Step 2: Remove Ghost Network Adapters (The Critical Step)

Unable to Install Kerio VPN Client on Windows with Error 28201

If you are using a machine with an ARM processor (like some Surface Pro models), the Kerio VPN Client is not compatible. You must use the built-in Windows VPN client configured for L2TP or IKEv2 instead.