D-Link DWA-181 User Manual page 22

Section 6 - Troubleshooting
Check that the Network Connection for the wireless client is configured properly. Select AP (Infrastructure) when connecting to an access point.
Double-click on the WLAN icon in the taskbar > click on Configuration to change the settings for the wireless adapter.
If Security is enabled, make sure that the correct encryption keys are entered on both the DWA-181 and the access point. Double-click on the WLAN
icon in the taskbar > click Encryption. Check to see that the key selected is set to the same key as other devices on the network.
D-Link DWA-181 User Manual 22