I tried everything suggested on all these boards and FINALLY solved my epson wf 3620 always losing connection to my wifi after 2 days. I called my tech support at my internet provider and mentioned to him what was happening. He took a look at my modem remotely and saw that my 2.4 and 5g were bouncing back and forth between the two trying to make one connection because ,my two computers were logging in at 5g because I selected that rate, whereas the printer can only connect at 2.4, so he adjusted the setting in the modem to create both a 5g and a 2.4g out to the internet so my computers use the 5g and printer the 2.4. I HAVEN’T HAD A PROBLEM SINCE, plus streaming movies has eliminated buffering issues almost 100%. I hope this helps.