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Martin
Martin, System Administrator
Category: Networking
Satisfied Customers: 2461
Experience:  10+ Years Experience CCNA Network Engineer A+ Net+ Linux & Windows OS C++ Programming
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I have a basic office network which I recently changed the

Customer Question

Hello,
I have a basic office network which I recently changed the router subnet from 192.168.0.x to 192.168.2.x and ever since this one of my Win10 computers has stopped comunicating with the internet. It can access all internal network resources fine.
I can ping the router and this works.
Ping any external name or ip does not work. However, if I ping google.com if does return the ip address and also if i nslookup google.com it returns the ip address.
Submitted: 1 year ago.
Category: Networking
Expert:  Martin replied 1 year ago.

Hello, welcome to JustAnswer my name is ***** ***** I'm one of the experts who will be assisting you today.

Sounds like everything's working except the DNS server.

Are the TCP/IP settings on the Windows 10 machine set to automatic or manual?

Please reply using the box below.

Regards,
Martin

Customer: replied 1 year ago.
Auto received from the router
Expert:  Martin replied 1 year ago.

Try this:

Unplug the router (for a full 2 minutes)
Shut down the Windows 10 computer
Plug the router back in (once the 2 mins are up) and wait for all the lights to come back on normally.
Turn the Windows 10 computer back on

Do your ping/dns tests then and tell me what happened.

Customer: replied 1 year ago.
Done that and still the samePing router responds fine
Ping google.com returns 216.58.208.78 for ip but request timeout
nslookup google.com return 95.154.201.97
Expert:  Martin replied 1 year ago.

What happens if you open a browser and type google.com in the address bar?

What error comes up if any?

Also do you have any anti virus/firewall running on that computer?

Customer: replied 1 year ago.
in chrome "The webpage is not available" - ERR_CONNECTION_TIMED_OUT
Expert:  Martin replied 1 year ago.

What if you type 216.58.208.78 into the address bar instead of google.com

Customer: replied 1 year ago.
Same result. I think its more than a dns problem ??
Expert:  Martin replied 1 year ago.

Yes, seems that way - we could look into your Internet Properties connections settings (for proxies), hosts file to see if there are any new entries but the easiest way would be to run a system restore.

Do you know how to run system restore?

Customer: replied 1 year ago.
I have checked Internet Properties & hosts file for any suspect entries and they are fine. This only occured after change the router subnet. A system restore seems drastic
Expert:  Martin replied 1 year ago.

System restore won't remote any files, just revert settings - why would it be drastic?

I asked you about an anti-virus/firewall before, do you have either?

Customer: replied 1 year ago.
Had avg and removed it to see if this done anything
Expert:  Martin replied 1 year ago.

Does this happen on IE as well and have you tried flushing the dns?

Customer: replied 1 year ago.
it does the same in IE and if have flushed dns and arp
Expert:  Martin replied 1 year ago.

What does ipconfig /all say regarding IP address, Default Gateway and DNS?

Customer: replied 1 year ago.
IP 192.168.2.29
Gateway 192.168.2.1
DNS 8.8.8.8 & 192.168.2.1
Expert:  Martin replied 1 year ago.

You said the TCP/IP settings were set to automatic before?

You're using Google's DNS server, that is input manually.

Can you check the settings again and set them all to automatic for me?

Customer: replied 1 year ago.
the router dhcp is set to issue that dns
Customer: replied 1 year ago.
Connection-specific DNS Suffix . : netgear.local
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : FC-AA-14-19-6F-D2
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.2.29(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 16 November 2015 18:39:15
Lease Expires . . . . . . . . . . : 18 November 2015 15:48:41
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.2.1
8.8.8.8
192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Expert:  Martin replied 1 year ago.

Try setting the only DNS manually then.

Try:

DNS1: 8.8.8.8
DNS2: 8.8.4.4

Test it.

Then try:

DNS1: 192.168.2.1
DNS2: 8.8.8.8

Test again.

Customer: replied 1 year ago.
still the same. Should I try the system restore?
Expert:  Martin replied 1 year ago.

Give it a go, don't go too far back, just before you made the changes

Customer: replied 1 year ago.
ok
Expert:  Martin replied 1 year ago.

Still running?

Customer: replied 1 year ago.
Just finished. Still the same
Expert:  Martin replied 1 year ago.

Interesting, do any other computers on the network have Windows 10?

Customer: replied 1 year ago.
2 on them
Expert:  Martin replied 1 year ago.

And is there any way you can get Team Viewer on the computer to see if it connects to the server?

Customer: replied 1 year ago.
I can try. Give me a minute or two
Expert:  Martin replied 1 year ago.

Thanks

Customer: replied 1 year ago.
Installed team view on the suspect machine but it will not connect nor give an id
Expert:  Martin replied 1 year ago.

One more thing I'd try is, from an elevated command prompt:

netsh int ip reset
netsh advfirewall reset
netsh winsock reset


And if you're using IPv6:

netsh int ipv6 reset

Have you tried connecting it directly to the Internet instead of through a router/switch?

And have you tried grabbing the TCP/IP settings off another machine and giving it to the Windows 10 computer (manually)?

Customer: replied 1 year ago.
Would you like to team viewer into my computer which can them teamviewer into the problem computer
Expert:  Martin replied 1 year ago.

Sure we can give that a go

Customer: replied 1 year ago.
ID: 218 082 592
PW: x5ix44
Customer: replied 1 year ago.
sorry pw= 7s3r58yk
Expert:  Martin replied 1 year ago.

Thanks

Expert:  Martin replied 1 year ago.

Let me know how the refresh goes, or if you managed to get it going another way.

And if you're happy with the service I'm providing so far feel free to click on one of the 5 stars above followed by Finish as it would be greatly appreciated!

Remember you can continue replying to me until you've got all the information you need.

Regards,
Martin

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