Unable to install AVG 2016 error code 0xC0070643 encountered

Hello Gavin,
We understand how something like this can really try your patience.
To get this fixed, we request you to run AVG remover tool in your pc and then install AVG Antivirus free back in your pc.
To run AVG remover tool for AVG Antivirus please follow the below steps :
Please click on the below link to download remover tool
http://aa-download.avg.com/filedir/util/AVG_Remover.exe
Accept the license agreement and then choose AVG Internet Security and remove it.
NOTE: Once the AVG Remover Tool has done with its process. Please go to the drive where you installed this tool and look for a folder named as "AVG Remover" and I request you to delete it manually.

Hi, 

I have been trying to update the AVG to the 2016 version but it keeps returning the following:

Error code: 0xC0070643
Description: Event exec_finished

the installation bar reached 100% but showed the above. I have tried to use the AVG_BFEfix tool and tried re-installing but still encountered the same problem. This is very frustrating. I have no other anti-virus tool installed other than AVG. 

Kindly advise. 

Thanks.

To install AVG Antivirus Free 2016 we request you to use the offline installation. To determine whether your OS is a 32-bit or 64-bit, please click on this link. http://support.microsoft.com/en-us/kb/827218
For 32 Bit : http://files-download.avg.com/inst/mp/AVG_Antivirus_Free_x86_694.exe
For 64 Bit : http://files-download.avg.com/inst/mp/AVG_Antivirus_Free_x64_693.exe
Please feel free to contact us for any further assistance. Have a great day, Aravind AVG Customer Care

Hello Gavin,
We understand how something like this can really try your patience.
To get this fixed, we request you to run AVG remover tool in your pc and then install AVG Antivirus free back in your pc.
To run AVG remover tool for AVG Antivirus please follow the below steps :
Please click on the below link to download remover tool
http://aa-download.avg.com/filedir/util/AVG_Remover.exe
Accept the license agreement and then choose AVG Internet Security and remove it.
NOTE: Once the AVG Remover Tool has done with its process. Please go to the drive where you installed this tool and look for a folder named as "AVG Remover" and I request you to delete it manually.