ContributionsMost RecentMost LikesSolutionsRe: Xbox one slow upload speed I am getting the exact same issues. No matter what I do I cannot get over 2mb upload which is ridiculous since I pay for gigablast. Even changing the MAC address does nothing. I believe this is all due to COX closing Port 80 for residential use. Microsoft requires 7 ports to be open for it to run smoothly and Port 80 is one of them they require. I am in Omaha, NE and my internet was fine about a month ago. I believe the only way to improve this is to switch to a different internet company. I took my Xbox to my friends house who is down the street and instantly got 300+ upload because he's on Century Link. Re: COX Slowing Xbox upload speeds Then what would be crippling my upload just to my Xbox's? I have troubleshooted everything else it could be. Re: COX Slowing Xbox upload speeds I spoke to Microsoft support and they stated that Port 80 is a major port that needs to be open for services to run smoothly. I then spoke to COX support who verified that they closed Port 80 to their customers due to security reasons (viruses/worms). That is absolutely ridiculous due to Port 80 being a very common port that many devices rely on to be open. COX Tech told me they would not fix the situation. Microsoft was very confused on why COX would close Port 80. Looks like Xbox users are stuck with poor speeds unless they switch ISP's. COX Slowing Xbox upload speeds I pay for 1GB 1000MB down and 35MB upload with unlimited data. I troubleshooted everything but recently found that Cox is slowingcertain upload ports for the Xbox. I directly connected the xbox to the modem and still cannot get higher than 2MB upload. When I speed test on my Iphone/PC/Mac I get around 35mb. I even took my Xbox to a friends who has Century Link and performed a speed test which resulted in over 300mb upload. I am just confused why are my upload speeds are purposely being slowed when it comes to gaming purposes? I enjoy Cox but if this does not get resolved quickly I will be going to Century Link.