Checking for and Removing dual IPs on an adapter

Control Panel

Click Start >> Control Panel to open the Control Panel. Then click View network status and tasks.

Change Adapter Settings

Select Change Adapter Settings.

Open Adapter Properties

Right-click on the appropriate adapter (typically Local Area Connection) and select Properties.

Open TCP/IP Properties

Click on the Internet Protocol Version 4 line to highlight it, then click Properties.

Open Advanced Properties

Click the Advanced button.

Identify and Remove Additional Addresses

In the top pane, you should see a single IP/Subnet pair. If there are multiple lines, click each line below the first and select Remove. Click OK or Close on each open dialog to save the changes.