Windows Defender

Hello Adam,
I understand how something like this can really try your patience.
Please be informed that AVG Antivirus free has Antivirus, Link Protection, Email Protection. The firewall option is available in AVG Internet Security which is a paid product http://www.avg.com/us-en/internet-security . If AVG Internet Security is installed in your pc it will automatically deactivate Windows Defender and AVG Firewall will be active. If AVG Internet Security is uninstalled it will automatically enable your Windows Defender. Since you have installed basic AVG Antivirus Free your Windows Defender will be active in your pc since it doesn't have firewall in it.
Please feel free to contact us for any further assistance. Thank you.

Can I enable Windows Defender to run alongside AVG? I would like to scan using either or. I cant seem to turn it on in windows10. Is there an enable defender option in AVG's advanced settings? I am using the free version of AVG virus protection.

Adam, Please note that from Win 8 onwards i.e. inc Win 10 Windows Defender is classified as a real-time anti-virus prog so therefore if enabled it is very likely to conflict with AVG Anti-Virus. 
AVG Guru