(0xC0070643) and Description: Event exec_finished

Hello Alessandro,
We regret for the inconvenience caused. Please check whether you have installed any other conflicting applications like McAfee, Avast, Norton etc… on your PC, If so please uninstall the conflicting applications.
If not, please  click this link http://aa-download.avg.com/filedir/util/AVG_Remover.exe to download and run the AVG Remover tool to remove all the traces of the AVG.
1. Please select the AVG products which are shown in the remover tool window and then start removal process.
2. After the remover tool process is successfully finished, restart your computer.
3. After the restart,  manually delete the AVG Remover folder in the C drive of My computer.

I would like to install the free AVG protection but I get (0xC0070643) and Description: Event exec_finished.
I tried uninstalling with AVG Removal + reinstalling AVG_Antivirus_Free_x64_693 (II have a 64 bit Windows 8.1 version) several times but it seems not to work.
Can you help please ?

Hello Alessandro,
We regret for the inconvenience caused. Please check whether you have installed any other conflicting applications like McAfee, Avast, Norton etc… on your PC, If so please uninstall the conflicting applications.
If not, please  click this link http://aa-download.avg.com/filedir/util/AVG_Remover.exe to download and run the AVG Remover tool to remove all the traces of the AVG.
1. Please select the AVG products which are shown in the remover tool window and then start removal process.
2. After the remover tool process is successfully finished, restart your computer.
3. After the restart,  manually delete the AVG Remover folder in the C drive of My computer.

Once uninstalled please use the following links to reinstall your AVG Free program without the AVG Zen Interface.
Please click on this link. http://support.microsoft.com/en-us/kb/827218 to determine whether your OS is a 32-bit or 64-bit.
Once verified please use the following links to download appropriate installer file :
32- Bit : http://files-download.avg.com/inst/mp/AVG_Antivirus_Free_x86_694.exe
64- Bit : http://files-download.avg.com/inst/mp/AVG_Antivirus_Free_x64_693.exe
Please feel free to contact us for further assistance.
Thank you.