Knowledge Base | Centova Cast v3 | Troubleshooting
Unable to contact licensing servers
When I attempt to reissue my license, and/or when I start Centova Cast, Centova Cast displays an error and indicates that it cannot connect to the licensing servers. Why is this, and how do I correct it?
This indicates that Centova Cast is not able to contact
license3.centova.com for license validation.
Common causes of this problem include:
Your datacenter may run firewalls that prevent outbound connections. Many datacenters block outbound connections from web servers for security reasons. You should contact your datacenter and ask them to ensure that your server is permitted to make outbound connections to
Your DNS resolver configuration on your server is broken. You can test this by logging in to your server via SSH, and typing the following:
If you receive any kind of error message to the effect of "unknown host" or "unable to resolve hostname", then your DNS resolver configuration is definitely broken.
In any event, if you are unable to successfully
ping license1.centova.comfor any reason (regardless of the error message), then there is definitely a networking problem of some sort, and you will need to contact your systems administrator or datacenter to resolve the problem.
If all else fails, try using 'telnet' to connect to port 80 on
license1.centova.com. Do this by logging in to your server via SSH, then typing:
telnet license1.centova.com 80
If you do not immediately see a message indicating a successful connection, then there is a networking problem of some sort and you will need to contact your datacenter or systems administrator to have this resolved.
If you have any doubt as to whether
license1.centova.com might actually be
down, please feel free to try the above connection tests using
In regard to the reliability of our licensing servers, all three are hosted on separate physical machines (one is hosted on a high-availability, multiply- redundant cluster and another is in a different datacenter in a separate geographic location) so the likelihood of all three going down simultaneously is near-zero.
Please note that if the tests above fail, then the connectivity problem is definitely on your end, and as such, we reget that there is unfortunately nothing at all that we can do on our end to resolve the problem for you. While our support representatives will be pleased to answer any questions you may have, the final resolution will need to come from your systems administrator or datacenter.