Error Code 0x80073712 Appears When You Update Windows Update
Open Internet Explorer and click on Tools->Internet Options
Goto Connections and LAN Settings
Check to make sure the Proxy server is disabled.
Second case would be with your Antivirus. There are proxy settings enabled under your settings of any security programs that you may be using. If you cannot find the procedure to stop it, you can ask our techs on chat support to guide you.