Installing AVG antivirus free 2016

Hello,
For almost a year I use AVG antivirus free 2015 version. Recently found and downloaded the free 2016 version "AVG_Antivirus_Free_x86_694(2016.0.7496).exe", shell I install it over the 2015 version, or first uninstall the 2015 version. By updating the existing version online had many problems, it did not finish the installation for several tries, so now I want to install it from a whole file.
So install it over or first uninstall the existing ? (if I uninstall first I remain without antivirus protection so I have to do it offline).
Answers will be appreciated
Thanks
Mordechai

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.
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. Thank you.

Hello Mordechai,
We understand how something like this can really try your patience.
To install the latest version of AVG Antivirus free 2016 version, we request you to uninstall the previous version of AVG 2015 from your pc and then install AVG 2016 version. To get your issue fixed, we request you to run AVG remover tool in your pc and then install AVG Antivirus Free 2016 version back in your pc to get your issue fixed. 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 Product and remove it.

Hello Mordechai,
We understand how something like this can really try your patience.
To install the latest version of AVG Antivirus free 2016 version, we request you to uninstall the previous version of AVG 2015 from your pc and then install AVG 2016 version. To get your issue fixed, we request you to run AVG remover tool in your pc and then install AVG Antivirus Free 2016 version back in your pc to get your issue fixed. 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 Product and remove it.