The error in the Kerio VPN Client (often associated with Kerio Control / GFI products) typically indicates a license or session limit issue on the VPN server.
Run the utility and select under the Product family. error 28201 kerio vpn client
: Unspecified errors often found in the Windows Event Viewer. Standard Solutions 1. Clean Removal and Reinstallation 28201 The error in the Kerio VPN Client
If Device Manager doesn't show them, or if the error persists, check the driver repository. Translation: The VPN server has rejected the connection
: Download and run the KT Uninstaller utility from GFI/Kerio. This tool specifically targets leftover registry keys and configurations that block new installations. Manual Driver Removal