This is quite common and happens with more programs that use components that have changed their configuration or entirely during the upgrade.
Try to remove CyberGhost using the Windows Control Panel uninstaller, or a utility uninstaller.
Make sure to keep the antivirus and firewall off during this and the following steps :
- Change the compatibility mode for the setup program. Right-click on the *.exe file, choose properties\ Compatibility, and under Compatibility choose Windows 8.
- Run the setup executable with elevated privileges (right-click on it\ run as administrator...). During the setup, make sure to accept and install all necessary components that the setup will prompt you to install.
If this does not help, please email us a couple of screenshots of the errors you get so that we can investigate them.
For any additional information or concerns - it is best to approach the Support Department:
via e-mail: firstname.lastname@example.org
via on-line request: https://support.cyberghostvpn.com/hc/en-us/requests/new
via 24/7 Live! Chat Sessions on our website