If there are issues experienced on your Linksys RE6400 unit, a factory reset might help to solve the problem. Resetting Linksys will wipe out all configurations including the name and password of the WiFi Network. This is something that you should keep in mind. You will apply all the initial setups for your Linksys RE6400. Find the button labelled "Reset" on the device you want to reset, in this case, a Linksys RE6400.
Wait for 10 seconds while holding down on the reset button until you see the power indicator light blinking to show that the factory settings of the router have been restored. After performing the factory reset operation on your Linksys RE6400, you can proceed with setting it up by following the Linksys RE6400 Setup procedure. To do this, plug your RE6400 into your modem and set up your WiFi settings including a new password for the Linksys device.
Wait for 10 seconds while holding down on the reset button until you see the power indicator light blinking to show that the factory settings of the router have been restored. After performing the factory reset operation on your Linksys RE6400, you can proceed with setting it up by following the Linksys RE6400 Setup procedure. To do this, plug your RE6400 into your modem and set up your WiFi settings including a new password for the Linksys device.