Please follow these steps:
1. Open Network and Sharing Center in Control Panel
2. Click Change adapter settings
3. Right-click the Microsoft Virtual WiFi Miniport Adapter, and click Disable.
4. Open Adobe Reader and Help > Check for Updates
I disabled all of my adapters and am still getting the error code. I also downloaded the most recent update manually from adobe's site and am still getting that error. Any suggestions?
As you have downloaded the update manually from Adobe site, switch off the internet (via LAN cable/wi-fi etc) and then start the update process. Also run the exe as 'Run as admin'. Please let me know if that doesn't work for you.