DNS error on Xbox 360

Hello TenablePark488,

Thank you for posting on the Xbox forums. There is an option to
manually change the DNS of the console. We will provide steps on how to complete this process. We recommend making the primary DNS server 8.8.8.8, and establishing the secondary DNS server as 8.8.4.4 in order to resolve this issue. Be sure to let us know
the results!

1. From the Dashboard, select Settings, and then select
   System.
2. Select Network Settings.
3. Select your network
4. Select Configure Network
5. On the Basic Settings tab, select DNS Settings.
   
6. Under Edit DNS Settings, select Manual.
   
7. Select Primary DNS Server, enter the primary DNS server address, then select
   Done.
   
8. Select Secondary DNS Server, enter the secondary DNS server address, select
   Done, and then select Done.

Hello! Thanks for reaching out on the forums. Here are some steps that might help resolve your issue.

Like many other network devices, the Xbox 360 uses the domain name system (DNS) to translate Internet addresses into numerical Internet protocol (IP) addresses. If the console is unable to retrieve the values for the DNS, the Xbox 360 will not be able to
connect to the Xbox Live network properly. The following demonstrates how to resolve most issues surrounding DNS errors, which can be caused by faulty networking equipment or incorrectly set DNS values.

1. Turn off the Xbox 360 console by pressing the power button on the front of the console. If you have a wireless networking adapter installed, unplug it from the USB port. Turn off all wired or wireless hardware capable of supplying an Internet connection
   to the Xbox 360 console; this includes wired and wireless routers and modems.
   
2. Turn on the modem and allow it to fully restart. Then, turn on the wired or wireless router connected to the Xbox 360 console and allow it to fully restart. Repeat this process for every other piece of hardware connected to the console.
   
3. Turn on the Xbox 360 console and scroll to “My Xbox”. Select “System Settings” and then select “Network Settings”. Choose between “Wired Network” or “Wireless Network” and then select Test Xbox Live Connection. Allow the test to fully complete. If any DNS
   errors persist, move on to the next step.
   
4. Enter a manual DNS value for use with the Xbox 360 console. This value can be retrieved from your computer by checking its network settings, or by contacting your ISP. Make sure to copy the values down on a piece of paper. After acquiring the correct DNS
   values, select the wired or wireless network you’re using on your console and select “Configure Network." Choose “DNS Settings” on the “Basic Settings” tab and select Manual. Select “Primary DNS Server” and enter the first DNS value. Select “Secondary DNS
   Server” and enter the second DNS value. Afterwards, test the Xbox Live connection once more.
   
5. Use a direct connection to your modem if you still have DNS errors. Directly plug your Xbox 360’s Ethernet cable into the modem. If the DNS error is resolved, you may be having problems with your router. Consult the router’s instruction manual for how to
   resolve this problem.

Have you tried
this guide for DNS errors specifically? It has more troubleshooting steps than the two you mentioned above.

Try use this page like reference https://support.xbox.com/en-US/xbox-360/networking/connection-error-solution

But you can check on in your Router of the DNS configuration, Try use the 8.8.8.8 and see help, or try config the network manually and put in DNS Field the DNS 8.8.8.8, 4.4.4.4, 1.1.1.1 (Try some of this DNS Server) and check if your Nat is Open to the your
Xbox

I have an Xbox 360 ( Black ) When I connect online me error dns . I contacted an operator xbox telephone company but have not solved ! you have suggestions ? normal procedures change dns console restart etc. were already ' made ​​help me!