Ok, Not really certain of what to do. 3 Days ago I was connecting fine, I turn on my Xbox today to find myself getting an MTU error. I am connected by way of ethernet cable.
What I have done this far.
Cleared Cache on Xbox twice, restarted xbox and restored factory default. While it was shut down I also disconnected the modem and had it turned off for just over a minute. After this I am still getting the MTU error. I have checked my UPNP which currently On. My ports I have no idea how to check, I have gone through my router and can not find any way to change them, but considering I have made 0 changes or updates to my computer they should be the same. If anyone has any other ideas please let me know cause I am all out. I have called verizon and my MTU is actually fine, currently my Max MTU is 1500 which is high enough according the the support questions I found...
My modem is a Verizon Actiontec GT704WGB.