Installation failure

I'm having problem when installing AVG internet security 2016.
It shows an error message "Error code: 0xC0070643
Description: Event exec_finished.
Please help me to install AVG.

Hello Shamaka,
We regret for the inconvenience caused. Could you let us know whether it is a free version or a paid version of AVG are you trying to install? Please check if you have any conflicting anti virus installed on your PC and remove it. Then please run remover tool to remove all the remnants of the failed installation and then try to install AVG.
To run remover tool, please visit http://www.avg.com/tools#tba2 and click on "AVG Remover" to download the remover tool and run it on your PC. It will ask you to select which product you would like to uninstall. Please select "AVG Protection" and follow the setup instructions to uninstall AVG. Once the tool is run, your PC will automatically reboots. After the restart, please check if a folder with name AVG Remover is created under C:\ and remove it.
Please, feel free to let us know if you require any further assistance. Thank you.