Wondering why Xfinity DNS server not responding and you don’t know what to do? To begin we must mention that there are plenty of factors that could interfere with your DNS server’s functionality.
That is why in this post we have included all of the main reasons that could negatively impact your DNS server’s performance and some quick methods that should solve the issue.
One of the ways to troubleshoot your DNS server is to switch to a different browser. If that doesn’t work, start your computer in safe mode and restart your router.
Also temporarily disable any antivirus and firewall software within your device and make sure to check if the peer-to-peer feature is enabled and then turn it off.
We are going to discuss all that in detail but first we should take a look at all possibilities and then exclude each one of them until you’re left with the true cause.
Why Does Xfinity DNS Server Not Responding?
Before proceeding with any of our troubleshooting methods, we have figured that it would be helpful if you know what you are dealing with.
This will help you to apply the methods and contribute to success.
Here are most of the possible causes:
- Browser Issue.
- Computer not in safe mode.
- Secondary connections.
- Temporal issues with modem & router.
- Peer-to-peer windows feature.
- Enabled antivirus and firewall service software.
- Comcast DNS Server Address not rectified.
- Overflowing DNS server cache memory.
Of course, there could be something we are missing but if your issue is related to any of the above-listed causes, we can guarantee that before the end of this post you will get it solved.
How To Fix Comcast DNS Server Not Responding?
Now that you know what the possible causes for this issue are, it is time to close the circle of possible causes by applying our methods one by one.
You shall start with the fastest and easiest methods first:
Method #1 Switch Internet Browser
As you are probably aware, you will be able to test your DNS connections by downloading a new internet browser or updating your current one.
Try accessing the web via different browsers than the one you are using and see if your DNS is still unfunctional.
If the issue isn’t there, you might have to consider updating your default browser, but if the DNS Server Not Responding message is still there, you can rule out the browser as the root of this issue.
Method #2 Launch PC in Safe Mode
Booting your machine in Safe Mode will lacuna the operating system using only the most essential processes and services.
In other words, much harmful software will not work in Safe Mode, providing you with the perfect environment to check your DSN.
Safe Mode is easily accessible if you are a Windows user and here we will explain how to do it step-by-step.
If you are using another OS, feel free to check online how to access Safe Mode.
To launch Windows in safe mode, follow the steps below:
- Select the windows button.
- Hover over the Power Icon.
- While holding the Shift key, select Restart.
- Then click on Troubleshoot > Advanced.
- When accessing the advanced options, click on Start-Up settings.
- Next, simply click on Enable Safe Mode with Networking.
When the restart occurs after these actions, hold down the Shift key. Once your computer is in safe mode, try to access the Comcast website once again to see if your DNS is working as intended.
If there isn’t a networking issue, the source of this problem might be a third-party installation running on your PC.
The issue could be related to harmful software existing on the drive, which will lead to DNS server issue. If Safe Mode solves the issue, your next step would be to reinstall the OS.
Method #3 Turn Off Firewall or Antivirus Software
Our next suggestion in your situation would be to temporarily disable any firewalls or antivirus software throughout your PC.
It is well-known that such software could be of great importance for safeguarding your device, but sometimes they could interfere with network connectivity.
For Mac users, you can find this specific option by heading to System Preferences > Security & Privacy > Firewall.
From there, simply locate the disable button and turn off your firewall for a couple of tries at the Comcast website.
For Windows users, you can navigate to the option by going to Update & Security > Windows Security > Virus & Threat Protection > Manage Settings.
From there, you will be easily able to turn off your Windows protection and give the Comcast website a couple of tries.
Method #4 Disable Peer-To-Peer Feature on Windows
If you are using a Windows machine, you have probably heard that the Peer-To-Peer features within your PC could interfere with the functionality of your network.
This feature will preserve the usage of your device’s download bandwidth. In other words, it will let you download & install a Windows update and then use this specific device to share this version across all other computers within your local network.
Disable the feature and try accessing Comcast to check if the issue is solved. If not, let’s move on to our next method.
Method #5 Clear DNS Memory Cache
If nothing has helped you so far, hopefully, clearing your DNS moment will be able to fix your Comcast DNS server and get you back on the site.
This method will also help if your DNS server isn’t responding Xfinity so pay attention!
First, enter the Command Prompt by typing CMD in your windows search engine. After the appearance of the black windows, insert the following commands.
Keep in mind that you will have to click Enter after typing down each command. Otherwise, the commands won’t take effect and you won’t be able to clear the Cache of your DNS server.
Method #6 Restart Router
Our last method that will hopefully help to reset your DNS server is to simply restart & power cycle your router. All you have to do is turn off your router and unplug the power cable. Then wait for a few minutes and plug the power cable back in.
We recommend plugging your router’s power cable directly into the outlet to hopefully evade issues with your power strip or divider.
Read Next: Best ways to make Xfinity WiFi Faster!
After explaining why the Xfinity DNS server not responding, hopefully, you could efficiently troubleshoot the issue and enter Comcast’s website.
If the issue is still there and you think you have missed something important, we recommend scrolling up to fill it in.
For more related posts feel free to check our blog where you will find solutions to any device in your smart home.
Finn Wheatley holds a Master’s Degree in Computer Science from UCL, London. He helped small data science consultancy firms, helping large corporations to grow their data capabilities, deploy advanced machine learning-based analytics and troubleshoot tech-related issues.