Solved Unable to run Ping and Traceroute

[probuddha]

Hello

I installed ibVPN trial version yesterday for a test run and within an hour of running it, I uninstalled it.

However, since then, I am unable to run Ping and Traceroutes to any website through the CMD. I later noticed a TAP 2 network adapter being installed along with the VPN client, but I removed it through Device Manager.

But still can't run ping and traceroutes

C:\>tracert google.com
Unable to resolve target system name google.com.

C:\>ping google.com
Ping request could not find host google.com. Please check the name and try again

Please advise

Many thanks!
.

 

[benjy206]

Hi probuddha.

Could you please post up the command ipconfig /all

Also do you have internet access?

 

[probuddha]

Hi Brendan

Thanks for your response.

Yes, I have full internet access and following is my ipconfig /all result

C:\>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : PB-PC
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 94-DE-80-28-C5-97
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::e8:3c5a:2176:5bdd%11(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.100(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Friday, 12 April 2013 11:24:44 AM
   Lease Expires . . . . . . . . . . : Friday, 12 April 2013 3:24:44 PM
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 244637312
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-F3-D6-EC-94-DE-80-28-C5-97

   DNS Servers . . . . . . . . . . . : 8.8.8.8
                                       8.8.4.4
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{15ADA4D7-BCAD-4BCD-A740-E92347C33664}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:24e1:38ce:8a3d:b505(Pref
erred)
   Link-local IPv6 Address . . . . . : fe80::24e1:38ce:8a3d:b505%13(Preferred)
   Default Gateway . . . . . . . . . : ::
   NetBIOS over Tcpip. . . . . . . . : Disabled

Thanks

 

[benjy206]

Hi Brendan

Thanks for your response.

Yes, I have full internet access and following is my ipconfig /all result

C:\>ipconfig /all
 
Windows IP Configuration
 
   Host Name . . . . . . . . . . . . : PB-PC
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
 
Ethernet adapter Local Area Connection:
 
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 94-DE-80-28-C5-97
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::e8:3c5a:2176:5bdd%11(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.100(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Friday, 12 April 2013 11:24:44 AM
   Lease Expires . . . . . . . . . . : Friday, 12 April 2013 3:24:44 PM
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.1
   DHCPv6 IAID . . . . . . . . . . . : 244637312
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-F3-D6-EC-94-DE-80-28-C5-97
 
   DNS Servers . . . . . . . . . . . : 8.8.8.8
                                       8.8.4.4
   NetBIOS over Tcpip. . . . . . . . : Enabled
 
Tunnel adapter isatap.{15ADA4D7-BCAD-4BCD-A740-E92347C33664}:
 
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
 
Tunnel adapter Teredo Tunneling Pseudo-Interface:
 
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:24e1:38ce:8a3d:b505(Pref
erred)
   Link-local IPv6 Address . . . . . : fe80::24e1:38ce:8a3d:b505%13(Preferred)
   Default Gateway . . . . . . . . . : ::
   NetBIOS over Tcpip. . . . . . . . : Disabled

Thanks

Ok I see your using google's DNS server. Try to ping this address 173.194.34.103

 

[probuddha]

Here you go

C:\>ping 173.194.34.103

Pinging 173.194.34.103 with 32 bytes of data:
Reply from 173.194.34.103: bytes=32 time=552ms TTL=43
Reply from 173.194.34.103: bytes=32 time=563ms TTL=43
Reply from 173.194.34.103: bytes=32 time=563ms TTL=43
Reply from 173.194.34.103: bytes=32 time=563ms TTL=43

Ping statistics for 173.194.34.103:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 552ms, Maximum = 563ms, Average = 560ms

Note - Overall my ISP sucks big time...but this time, the pings are higher following an undersea cable cut which is yet to be restored

 

[benjy206]

Here you go

C:\>ping 173.194.34.103
 
Pinging 173.194.34.103 with 32 bytes of data:
Reply from 173.194.34.103: bytes=32 time=552ms TTL=43
Reply from 173.194.34.103: bytes=32 time=563ms TTL=43
Reply from 173.194.34.103: bytes=32 time=563ms TTL=43
Reply from 173.194.34.103: bytes=32 time=563ms TTL=43
 
Ping statistics for 173.194.34.103:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 552ms, Maximum = 563ms, Average = 560ms

Note - Overall my ISP sucks big time...but this time, the pings are higher following an undersea cable cut which is yet to be restored

Ok your getting a reply from google.com. So what this says to me is a dns problem.

Try the following command. ipconfig /flushdns

 

[probuddha]

Flushed the DNS - still no improvement

 

[benjy206]

How about changing you dns server to another one. Such as your own ISP?

 

[benjy206]

Here is a list Free Fast Public DNS Servers List Personal Blog

 

[probuddha]

Reverted to the ISP's default DNS..but still the problem persists.

Also when I deactivated the adapter to change the DNS, I got the following prompt


Does this indicate something?

 

[benjy206]

Hmm I think that it could be time for a system restore. That vpn seemed to of messed it all up for you.

http://www.sevenforums.com/tutorials/700-system-restore.html

 

[probuddha]

I have no restore points on my system

 

[benjy206]

You must have them turned off. http://www.sevenforums.com/tutorials/81500-system-restore-enable-disable.html

Post a screen shot of you network adapter's

 

[probuddha]

System Restore on my PC seems to be enabled already, please see screenshot below

Also when I try to ping and trace routes to IP addresses, it works, but not with any domain names

Screenshot of my network adapter also attached

 

[benjy206]

Ok maybe you should try advanced boot menu and do safe mode from there. http://www.sevenforums.com/tutorials/666-advanced-boot-options.html

Click on just Safe Mode then try a system restore from within safe mode. Go to control panel.

 

[probuddha]

I reinstalled my network adapter...still no improvement

Also I noticed that my CMD takes a few seconds to close after clicking the X on it. Previously it was instant

 

[benjy206]

Yes I would try going into safe mode and see if you can do a system restore because if you have them on it should be creating restore points

 

[probuddha]

Problem Solved!

Hi

So I tried this method as suggested in this thread and it seemed to fix the problem

Let’s try to reset WINSOCK, IPv4 TCP/IP and IPv6 TCP/IP stack.
 
a. Click on Start and in the search box, type cmd.
b. Right click on the Command Prompt, select "Run as Administrator" to open a Command Prompt.
c. At the command prompt window, type the following commands:
[B]netsh winsock reset catalog[/B] that resets WINSOCK entries to installation defaults.
[B]netsh int ipv4 reset reset.log[/B] that resets IPv4 TCP/IP stack to installation defaults.
[B]netsh int ipv6 reset reset.log[/B] resets IPv6 TCP/IP stack to installation defaults.
d. Restart the computer.

I can now ping and trace routes to domain names as well Also that message box that appeared while accessing the properties of the network adapter didn't show up this time

Thank you so much for your help on this Brendan, very appreciated!

 

[benjy206]

Hi

So I tried this method as suggested in this thread and it seemed to fix the problem

Let’s try to reset WINSOCK, IPv4 TCP/IP and IPv6 TCP/IP stack.
 
a. Click on Start and in the search box, type cmd.
b. Right click on the Command Prompt, select "Run as Administrator" to open a Command Prompt.
c. At the command prompt window, type the following commands:
[B]netsh winsock reset catalog[/B] that resets WINSOCK entries to installation defaults.
[B]netsh int ipv4 reset reset.log[/B] that resets IPv4 TCP/IP stack to installation defaults.
[B]netsh int ipv6 reset reset.log[/B] resets IPv6 TCP/IP stack to installation defaults.
d. Restart the computer.

I can now ping and trace routes to domain names as well Also that message box that appeared while accessing the properties of the network adapter didn't show up this time

Thank you so much for your help on this Brendan, very appreciated!

No problem