Unable to activate license due to error "3CX failed to establish a TCP connection to activation.3cx.com....."

[ToanTran]

Hi All,

I install 3CX latest version 16.0.2.910 and have an issue unable to activate license due to same error in 3CX version 15

3CX failed to establish a TCP connection to activation.3cx.com.
Ensure that the local or border firewalls are configured to allow outbound traffic to activation.3cx.com

I also tried set DNS 8.8.8.8 or turn off firewall but does not help so could you please help me on this issue

 

[JohnS_3CX]

Hi,

do an nslookup on the PBX machine and see if it can resolve activation.3cx.com first

 

[ToanTran]

Hi JohnS_3CX,

I ping activation.3cx.com and resolve 151.80.125.88

Below is tracert

C:\Users\Administrator>tracert activation.3cx.com

Tracing route to activation.3cx.com [151.80.125.88]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms 10.128.224.1
2 <1 ms <1 ms <1 ms ec2-100-20-100-21.us-west-2.compute.amazonaws.com [100.20.100.21]
3 <1 ms <1 ms <1 ms 173-16-8-1.client.mchsi.com [173.16.8.1]
4 * * * Request timed out.
5 <1 ms <1 ms <1 ms 103.199.4.3
6 1 ms 1 ms 1 ms static.vnpt.vn [113.164.29.97]
7 2 ms 1 ms 1 ms static.vnpt.vn [113.171.7.33]
8 1 ms 1 ms 2 ms static.vnpt.vn [113.171.50.222]
9 * * * Request timed out.
10 148 ms 147 ms 148 ms hundredgige0-6-0-1.auvtr5.-.opentransit.net [193.251.131.230]
11 158 ms 158 ms 157 ms be100-173.th2-1-a9.fr.eu [213.251.130.78]
12 158 ms 158 ms 158 ms be100-1043.rbx-g1-nc5.fr.eu [94.23.122.146]
13 * * * Request timed out.
14 157 ms 201 ms 188 ms po5.rbx-s7-6k.fr.eu [188.165.9.78]
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.

Trace complete.


Thanks.

 

[JohnS_3CX]

Hi @ToanTran

If you faced this issue with V15 and V16 on the same machine then there is clearly something blocking the PBX from reaching the activation server. DNS resolution does not necessarily mean you can reach the server. Some possible examples of things that can affect you may include:

1. Firewall/Router/Modem
2. Software firewall on OS
3. 3rd party antivirus software on machine
4. hosts file pointing elsewhere

For your own ease, just bypass all your equipment and connect the server straight to the internet. If you still can't reach the server, then the issue is quite possibly on the machine itself.

 

[JohnS_3CX]

Please also provide all the below necessary information before we proceed, it will help make a difference in the troubleshooting procedure:

https://www.3cx.com/community/threads/information-to-provide-when-requesting-help.67558/