You might experience the same error as on the above screenshots. Download and Install an older version of VPN Client.It is normal if they are not being removed from the list after you uninstall. If you see WAN Miniport adapters, please uninstall all of them.Alternatively, open Control Panel -> Network and Internet -> Network Connections -> right-click Kerio Virtual Network Adapter -> in Driver tab click Uninstall Device. Navigate to Device Manager > Network Adapter and Uninstall the Kerio Virtual Network Adapter.Delete this key HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Kerio.Check Windows Programs and Features and uninstall the Kerio VPN client if it's listed there.Note: please consider disabling driver signature enforcement.īelow are the steps to resolve the error with the 0x800F020B code.
This article contains instructions to resolve each of these errors in Windows 8/8.1/10 and Server 2012 environment. When trying to install or upgrade Kerio VPN client on Windows OS, the installer stops, and displays the error 28201: device is already registered or unspecified error 0x800F020B or 0x800F0244.
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