Whenever my router reboots due to choppy connection issues, when it boots back up 80% of the devices reconnect but a few of them get the dreaded “Incorrect Password” message, despite the fact that the password is correct. I’ve seen a few posts about this issue and there is never a real resolution. Just the same suggestions that don’t work, or sometimes do, but don’t get to the root of the problem.
My iPhone 15, my son’s iPad 10th gen. Laptops, smart plugs other iPhones, Xbox, ps5 all connect using the same password. Occasionally one or two of the smart plugs won’t connect either. If we move those devices to the opposite side of the house they will connect to the extender over there, but if drift to the other side and they switch over to the main router they lost connection and you get the passsword error. Router is Fios owned and is 4 years old.