I'm using a Lenovo G510 notebook. It has a Qualcomm Atheros AR8172 ethernet controller. Recently, I updated to windows 8.1. As my college provides a proxy server, I had to exempt the windows apps using appcontroller loopback and use ccproxy to use the windows store for downloading the 8.1 update. But after updating, the LAN notifier started showing the yellow exclamation mark even though my net is working as I type this. But the taskbar notifier says no internet access. I've already tried ipconfig /all and flushdns. I've also installed the driver for win8.1 after uninstalling it. I tried exempting and changing the regedit like before. I tried configuring the ipv4 switching it from dhcp to static back and forth.
But the yellow sign won't go and thus the windows store won't open. Not only windows store, the other apps like travel and mail are also not working. What should I do to reopen my apps over proxy like before?