Temporarily disable your antivirus software's real-time protection for 10 minutes.
A previous installation of the VPN was not removed cleanly.
: Temporarily disable "User Account Control: Detect application installations and prompt for elevation" in secpol.msc Local Policies > Security Options to prevent the OS from blocking the driver hook. support.keriocontrol.gfi.com : Always disable active antivirus software error 28201 kerio vpn client
Immediately re-enable your security software once the installation succeeds. Best Practices to Prevent Future VPN Failures
Encountering while installing or updating the Kerio VPN Client can bring your remote work to a sudden halt. This specific error typically triggers a message stating that the installer failed to configure the virtual network adapter. support
Yes. If your network forces all traffic through an authenticating proxy, Kerio VPN Client may fail. Solution: Use a direct internet connection or configure proxy exceptions.
Open your third-party antivirus software (e.g., Avast, McAfee, Bitdefender). Open your third-party antivirus software (e.g.
If none of the above steps resolve the issue, you may need to reinstall the Kerio VPN Client:
Here is a step-by-step guide to clearing this error and getting your VPN back online. Phase 1: Perform a Clean Uninstall
: For Windows 10 (version 2004 or later), ensure you are using VPN Client version 9.2.7 build 4393
is a critical installation and upgrade failure in the Kerio Control VPN Client that occurs when the installer fails to register, update, or remove the virtual network adapter driver (kvnet.sys) .