RESOLVE: Cannot resolve host address: uk2.vpn.comodo.com: [NO_DATA]

Security Products & Services Comodo TrustConnect - CTC
1

Since tonight I cant connect anymore to Trust connect from my laptop
De message is: RESOLVE: Cannot resolve host address: uk2.vpn.comodo.com: [NO_DATA] The requested name is valid but does not have an IP address.

I also cant connect anymore to www.comodo.com The message is: Internet Explorer cannot display the webpage.

Any clue what might cause both? Looks like that my IP is complete blocked because i can access the website via a proxy.

Thanks in advance

2

Strange …still have this problem. It looks like it my pc …cant connect to the comodo website. aslo can connect with Trust connect (see above)

not able to connect to comodo website is the case for Explorer as for Chrome.
I have un-installed my antivirus software and installed a new one …nothing changed.
also checked the hosts file … nothing to see.

My GF\'s laoptop on the same router does not have any problem connecting to comodo.

I can only acces this forum by making use of an proxy.

What can it be?

3

Try to give the following commands in Command Prompt:

ping www.comodo.com
ping uk2.vpn.comodo.com
nslookup www.comodo.com
nslookup uk2.vpn.comodo.com

What is the output?

4

Thanks response.

please see below the results: Its only on my laptop. My GF's laptop on the same router does not have any problem)

ping www.comodo.com
Ping request could not find host www.comodo.com. Please check the name and try again.

ping uk2.vpn.comodo.com
Ping request could not find host uk2.vpn.comodo.com. Please check the name and try again.

nslookup www.comodo.com
*** Can\'t find server name for address 192.168.1.254: Non-existent domain
Server: dnscache1.tweakdsl.nl
Address: 82.197.196.182

Non-authoritative answer:
Name: www.comodo.com
Address: 91.199.212.176

nslookup uk2.vpn.comodo.com
*** Can\'t find server name for address 192.168.1.254: Non-existent domain
Server: dnscache1.tweakdsl.nl
Address: 82.197.196.182

Non-authoritative answer:
Name: uk2.vpn.comodo.com
Address: 91.212.12.68

While me connected on an old laptop (same router - NETWORK):

ping comodo.com

Pinging comodo.com [91.199.212.176] with 32 bytes of
Reply from 91.199.212.176: bytes=32 time=21ms TTL=55
Reply from 91.199.212.176: bytes=32 time=21ms TTL=55
Reply from 91.199.212.176: bytes=32 time=21ms TTL=55
Reply from 91.199.212.176: bytes=32 time=21ms TTL=55

Ping statistics for 91.199.212.176:
Packets: Sent = 4, Received = 4, Lost = 0 (0% los
Approximate round trip times in milli-seconds:
Minimum = 21ms, Maximum = 21ms, Average = 21ms

ping uk2.vpn.comodo.com

Pinging uk2.vpn.comodo.com [91.212.12.68] with 32 bytes of data:
Reply from 91.212.12.68: bytes=32 time=21ms TTL=55
Reply from 91.212.12.68: bytes=32 time=21ms TTL=55
Reply from 91.212.12.68: bytes=32 time=21ms TTL=55
Reply from 91.212.12.68: bytes=32 time=22ms TTL=55

Ping statistics for 91.212.12.68:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 21ms, Maximum = 22ms, Average = 21ms

nslookup www.comodo.com
Server: UnKnown
Address: 192.168.1.254

Non-authoritative answer:
Name: www.comodo.com
Address: 91.199.212.176

nslookup uk2.vpn.comodo.com
Server: UnKnown
Address: 192.168.1.254

Non-authoritative answer:
Name: uk2.vpn.comodo.com
Address: 91.212.12.68

5

Do you have a firewall on your laptop? If yes, turn it off and try to connect to TrustConnect.
Also, show please the output of the following command:
tracert uk2.vpn.comodo.com

6

Hi,

Yes have Norton Internet security. Had un-installed it earlier because of this reason. Even without Norton still the same problem.

tracert uk2.vpn.comodo.com

Tracing route to uk2.vpn.comodo.com [91.212.12.68]
over a maximum of 30 hops:

1 1 ms 1 ms 1 ms 192.168.1.254
2 * 8 ms 8 ms 217.19.16.209
3 8 ms 8 ms 8 ms 217.19.16.33
4 10 ms 8 ms 8 ms fo1-ve155.sara.cambrium.net [217.19.16.22]
5 16 ms 17 ms 17 ms Vlan505.icore1.AD1-Amsterdam.as6453.net [195.219
.150.41]
6 9 ms 9 ms 107 ms 4.68.62.253
7 11 ms 9 ms 10 ms ae-34-52.ebr2.Amsterdam1.Level3.net [4.69.139.16
1]
8 16 ms 16 ms 16 ms ae-47-47.ebr2.London1.Level3.net [4.69.143.78]
9 16 ms 15 ms 15 ms ae-24-52.car3.London1.Level3.net [4.69.139.100]

10 16 ms 15 ms 16 ms Internet-Connections-Ltd.car3.London1.Level3.net
[212.187.200.146]
11 22 ms 22 ms 22 ms xe-0-0-1-0.peach.as34270.net [85.91.224.14]
12 21 ms 21 ms 21 ms ge-0-0-3-0.raphael.as34270.net [85.91.224.110]
13 21 ms 21 ms 21 ms uk2.vpn.comodo.com [91.212.12.68]

Trace complete.

Do you know any tool which tell me what blocks on the pc the access to comodo? (its only comodo which cant be accessed)

Thanks in advance

7

May be left overs of previously installed security programs are in the way. Please make sure no left over of them are in the way.

Try using removal tools for those programs. Here is a list of removal tools for common av programs: ESET Knowledgebase .

8

only have norton running … it happened overnight.
Can try the the tool but had an succesful install of norton searlier and still comodo was blocked.

Lets see wat the result will be … do not have much hope

9

Hi,

Just to let know the the problem has been solved by a complete new re-install of the laptop.
I found out that not only comodo was blocked but also other AV- vendors as well. It was probably a virus which was not picked up by Norton. After the install the virus came back from the USB drive … at this time Hitmanpro took care of it also Norton sonar was now picking it up . So it had nothing to do with Trust connect :wink: Thanks for your support