Xbox app is a fantastic program that lets you play games together with your friends across Xbox One and Windows 10 devices. However, you may encounter the Xbox app Server connectivity on Windows 10 is blocked issue sometimes.
Once you see this error, it indicates that the Windows 10 PC cannot be able to build a Teredo IPsec connection to the Quality of Server. Here are some common causes behind the Xbox Server connectivity blocked issue.
I assume this is in the inbound direction as it says using it as a server is blocked, if so simply add a rule for it. If your PC is behind a router then you would also need to add some NAT (port forwarding).
I recently bought my Alienware 17 R4 laptop and have had it for almost a month now. The first thing I did when I got my laptop was try to join my friends Xbox Live party through the Xbox App on Windows 10. Every time that I get into their party it says I am unable to connect due to network settings and check the network status and under server connectivity it says blocked. I went through the troubleshooting process on the Xbox site and none of that worked. I never had this problem with my gaming PC that I've had for over a year and I am able to connect to parties on that. I've had my laptop over at friends houses and while I was there I checked and it was still blocked. Between me and the houses I went to there were 5 different internet providers that it still happened with. At this point the only thing that I can think of is that it has to have something to do with the pre-installed software or settings blocking this which is why I am trying the Alienware forum for help. The laptop I have and the gaming PC that I have both run Windows 10 and are updated to the latest software release.
So I started off by disabling the Norton Firewall and checked to see if the Windows Firewall was enabled and it was disabled as it says that Norton controls that. Knowing that any firewall on the computer was off to my knowledge, i then checked if it knew the difference between public and private and it did. I then checked the UPnP and it was on. I then checked the Xbox App and still said that server connectivity was blocked. I then tried completely uninstalling the Norton program, restarted the PC as asked, forwarded the UDP 88 port and tried the Xbox app. This time it said my server connectivity was connected. I then tried joining a friends party to get the exact same error message as I have always gotten. I tried multiple times with the same end result. I then tried an ether-net cable and checked server connectivity again. I checked it first to be connected and then refreshed the page and it said it was blocked again. Between it changing from connected to blocked, I changed absolutely nothing. I also tried disabling the Windows Firewall with Norton uninstalled and it still said it was blocked. This is the web page it brings me to for troubleshooting this issue, and what I originally tried to no avail: Xbox App Server Connectivity on Windows 10 Is Blocked. Could it have something to do with the Killer Internet Control that comes with these laptops? That is the only difference that I see between the Alienware 17 R4 and my gaming tower. Thanks.
Just an update in case anyone is still following this at all, I just switched from AT&T U-Verse to Charter Spectrum (not due to this issue at all) but with my new internet service provider at my house, through direct connection and ethernet cable, it still says that the server connectivity is blocked. Without question it has something to do with the computer. Hopefully I am able to figure it out.
As this issue is mainly related to Xbox app, it is suggested contact our Xbox support for help, they are the best resource to troubleshoot this issue. -US/homeHere is a reference article I found from our Xbox support website, hope it is helpful.Xbox app server connectivity on Windows 10 is blocked -SG/xbox-on-windows/social/server-connectivity-xbox-app-displays-blocked
I noticed the time on my PC was wrongly set for some reason. Even when the correct time zone was automatically ON. Setting it to the correct time manually had no effect on the Xbox App server connectivity being Blocked. But a reboot and then setting the time and time zone automatically back to ON did the trick.
BE SURE TO RESTART YOUR MODEM AND ROUTER AFTER CHANGING PORTS! I did all these steps and did not restart and it still said blocked. Until the next day I said screw it and unplugged my modem let it sit for 5 minutes and to my surprise one of those steps worked and my connectivity is no longer blocked. I hope I helped in some way I can't tell you how many threads I've been on to solve this and 5 people through xbox and microsoft support.
If Grounded multiplayer mode is not working, there is a couple of things you can do. To fix any issues you may be experiencing with server visibility, you will need to locate the Xbox live settings on your computer. Here's how to solve this problem quickly so you can return to playing Grounded!
You can fix Grounded multiplayer by typing Xbox or Xbox Networking in the search box on the bottom left of your screen. Doing so will bring up the setting tab almost immediately. When the Xbox Networking tab opens, you should see something like the image below. Basically, you will want to have this program run a check to see if there are any connection issues with the Xbox servers, as it can prevent players from joining your game on Steam.
This will, in turn, have Xbox Networking try to fix the error blocking the Xbox Live multiplayer servers. When the program finishes the fix, you may need to restart your pc to fix the blocked connection. This is because even after running the fix, it will still say blocked, so you will need to restart your computer to change the connection from blocked.
If at this point multiplayer is still facing issues on your system then we recommend you try changing your region using a VPN. You can set one up in your network connection settings or simply download a desktop application and run it to change your region. In case you can access multiplayer on your system after using a VPN then it is likely that the servers in your region are facing an issue.