There could be many issues that might be getting in the way of the Setup. So to get out of these issues check the network issues first after a while check the Firmware version. In the last step take a look over the WiFi connections. To troubleshoot the issue check the connection of the device with the adapter. After that, navigate towards the Administration and then update the Firmware. Then, reach the local file from the computer and tap on the upload option from the computer. To reach the latest firmware. It is even better to use a zip file, tap on the Upload then in the below settings box. Lastly, weak signals can be sought by keeping the mobile device closed for the Linksys RE6400 setup.
