DNS Servers are often the cause of App Issues on LG Smart TVs. You may see apps disappear, give error messages, or appear in your Home Launcher Bar, yet refuse to open.
Setting manual DNS servers may also resolve "App needs to updated" messages, especially if trying to perform the update fails.
A DNS server converts the web adress name (www.google.com), into a web address ip (74.125.224.72). Like any other server, sometimes DNS servers go down, or don't reconcile correctly, and devices get confused.
Your best bet to resolve this issue is to set your DNS locations manually. Luckily, Google hosts public DNS servers for anyone to use.
Google's public DNS servers are 8.8.8.8 and 8.8.4.4.
How to set your DNS manually
Press the Home/Smart button on your remote to bring up your launcher bar.
Click the Settings icon in the top-right.
Choose the All Settings option at the bottom.
Choose the Network menu from the left.
Choose Wi-Fi Connection.
Note: In this menu, your network should have a checkmark
Choose Advanced Wi-Fi Settings at the bottom
Click the Edit button.
Uncheck the box labelled Set Automatically.
Click in the box labelled DNS Server and enter 8.8.8.8, then click Connect.
