Ok, first off i have Windows 10. Here's what's going on. When AVG Free 2015 goes to auto update its virus definitions, it says it can't because it is "detecting a running installation" and that I should "Complete the installation before updateing" but I'm not installing anything. This has been going on since last week. Any ideas?
Hello Gregory. I would request you to run AVG remover tool based on your OS (32-bit or 64-bit) to completely remove AVG and then re install. 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
To download AVG Remover tool for 32-bit: http://download.avg.com/filedir/util/support/avg_remover_stf_x86_2015_5501.exe
To download AVG Remover tool for 64-bit: http://download.avg.com/filedir/util/support/avg_remover_stf_x64_2015_5501.exe
Thank you.
Hello Gregory.
Pleased to see that you appear to be now sorted. Thanks for returning & posting. It is customers like you that are helping to make AVG a household name. Thank you for choosing an AVG solution for your computer. Please feel free to contact us back for any further assistance. Thank you.
Hi,
Had the same problem. I used this remover and it removed well. It took a minute since the Commaned window stopped until computer restated itself. After that were was no AVG on my system.
Thank you for your help 
Hello Gregory. I would request you to run AVG remover tool based on your OS (32-bit or 64-bit) to completely remove AVG and then re install. 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
To download AVG Remover tool for 32-bit: http://download.avg.com/filedir/util/support/avg_remover_stf_x86_2015_5501.exe
To download AVG Remover tool for 64-bit: http://download.avg.com/filedir/util/support/avg_remover_stf_x64_2015_5501.exe
Thank you.