We recommend downloading Advanced System Repair to eradicate Malware for you (it should cut down the time to about 15 minutes).
nslookup is a command line tool that helps in finding the DNS records of a website. It sends a name server query to the DNS and obtains the corresponding IP address. Aside from that, it can also perform some complex functionality such as finding details about FTP server, Mail server and many more but most of them are used by administrators. The best thing about nslookup is that it queries the DNS server directly and it does not rely on the cache.
On the other hand, there is another tool called PING that is used to verify connectivity. PING sends a packet of information to the IP address or Domain and gets back a response in the form of packets. So if everything goes well, all packets are received but if not, it will help you find out where the delay in the network exactly is. However, the ping command does not always attempt a DNS lookup which means that it might be using the DNS cache and use the IP address available in that table.
Although both of nslookup and PING helps you in identifying the host or IP address, however, they don’t always work and sometimes fail. So if your nslookup works but ping fails on your Windows 10 PC when querying the IP address of a website then it could be caused by many reasons. It could be that the nslookup queries work for you but when you try to use PING, it fails. For instance, if you open the abc.com website, here’s how it will look like:
C:\> ping xyz.com
Ping request could not find host xyz.com. Please check the name and try again.
The domain is converted into IP address and then data is sent to that IP address when you use PING. So when a reply comes back it means that the data is going back and forth to that domain without any problem. However, if the DNS fails to resolve the IP address of the website or if your PC does not attempt a DNS lookup, you will receive a similar error message that says, “Could not find host” and so on. To resolve this issue, here are some options that might help.
Option 1 – Reset Winsock, TCP/IP & Flush DNS
Resetting Winsock, TCP/IP and flushing DNS might help you resolve the issue with nslookup and PING. To do so, follow these steps:
- Right click on the Start button and click on Command Prompt (administrator) so you can pull up an elevated Command Prompt.
- After that, execute each one of the commands listed below. And after you typed in one after the other, you have to hit Enter.
- netsh winsock reset – type in this command to reset Winsock
- netsh int ip reset resettcpip.txt – type in this command to reset TCP/IP
- ipconfig /flushdns – type in this command to flush the DNS cache
- Next, restart your PC and check if the problem’s fixed.
Option 2 – Force Windows to do a DNS lookup using FQDN
- Go to Settings > Network & Internet > Status > Change adapter options.
- From there, right click on the network and select Properties.
- Next, in case you’re using IPv6, from the list of connections available in the list, select Internet Protocol Version 4.
- Then click on Properties and click Advanced.
- After that, switch to the DNS tab and select “Append these DNS suffices (in order)” and click on the Add button and then add “.” as a suffix so that each time you query using PING and other tool, it will add a “.” at the end and will force the lookup.
Option 3 – Make sure that there is only one default gateway
If your computer has more than one NIC connected and there are multiple default gateways, then it will most likely create confusion which is why you need to remove the default gateway from the configuration of all NICs and make sure that there is only one default gateway.
Option 4 – Use the Google Public DNS
You might want to change your DNS to Google Public DNS as it could also help you in fixing the nslookup and PING issues. To do so, follow the steps below.
- The first thing you have to do is right click on the network icon in the Taskbar and select Network and Sharing Center.
- Next, click on the “Change Adapter Settings” option.
- After that, search for the network connection that you are using to connect to the internet. Note that the option might be “Wireless Connection” or “Local Area Connection”.
- Right click on your network connection and click on Properties.
- Then select the new window to choose the “Internet Protocol 4 (TCP/IPv4)” option.
- After that, click on the Properties button and click the checkbox in the new window for the option “Use the following DNS server addresses”.
- Type in “8.8.8” and “126.96.36.199” and click OK and exit.
Option 5 – Check the Windows Host file
You can also try to cross check the Windows Hosts file to find out if the website you are trying to open has been blocked, because if it is, then it’s no wonder why PING fails even when nslookup works. There are instances when some third party application modifies the file and add some websites to the block lists. So if the website is indeed blocked, you need to remove it from the list.
Option 6 – Delete the WLAN Profiles
Deleting the WLAN Profiles might be a good idea if you are not able to connect to the internet on your computer and if you’re using Wi-Fi. It could be that the networks that were connected previously have gone rogue which is why it is not connecting properly. And so deleting the WLAN profiles might help you in fixing the issue with nslookup and PING.
Option 7 – Reinstall the Network Adapter Drivers
- Tap the Win + R keys to launch the Run window and then type in the “msc” command and hit Enter to open the Device Manager window.
- Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
- Then right click on each one of the Network drivers and select “Uninstall device”.
- Restart your PC.
For other system-related problems, you can use Advanced System Repair. This program is known as Advanced System Repair and is a useful tool that could repair corrupted registries and optimize your PC’s overall performance, including high CPU usage of some program in your system. Aside from that, it also cleans out your computer for any junk or corrupted files that help you eliminate any unwanted files from your system. This is basically a solution that’s within your grasp with just a click. It’s easy to use as it is user-friendly. For complete set of instructions in downloading and using it, refer to the steps below.
Perform a full system scan using ASR. To do so, follow the instructions below.
- Turn on your computer. If it’s already on, you have to reboot it.
- After that, the BIOS screen will be displayed, but if Windows pops up instead, reboot your computer and try again. Once you’re on the BIOS screen, repeat pressing F8, by doing so the Advanced Option shows up.
- To navigate the Advanced Option use the arrow keys and select Safe Mode with Networking then hit
- Windows will now load the Safe Mode with Networking.
- Press and hold both R key and Windows key.
- If done correctly, the Windows Run Box will show up.
- Type in the URL address, https://errortools.com/download/advanced-system-repair/ in the Run dialog box and then tap Enter or click OK.
- After that, it will download the program. Wait for the download to finish and then open the launcher to install the program.
- Once the installation process is completed, run ASR to perform a full system scan.
- After the scan is completed click the “Fix, Clean & Optimize Now” button.