The Kerio VPN Client for Mac running on OS X 10.10 Yosemite (or later) cannot be upgraded to the latest versions of Kerio VPN Client in some instances. This article describes the procedure to upgrade the Kerio Control VPN Client in such situations.
To resolve the issue, complete the following steps to perform a clean installation instead of an upgrade:
- Uninstall the old version of Kerio VPN Client using the installer of the same installed version.
- Install Kerio VPN Client and it should work as expected.
- If the Kerio VPN Client still refuses to install or run, type this command in the Terminal:
sudo rm -rf /Library/Extensions/kvnet.kext
- Install Kerio VPN Client again.
Kerio VPN Client is installed and Kerio VPN Client works correctly.