Connection Failed: Please check your API key.

[hakhan201]

Hello,

When I try to save my API key on my WHMCS site, I get an error saying "Connection Failed: Please check your API key.".

I disabled my server firewalls, and allowed all ip's to connect to the API from my vultr profile, however it did not help.

What could possibly be the issue?

I even regenerated the API key and tried to use it but the issue continued to remain.

Please help, I'm using WHMCS 8.1.3.

[Vsnumimmy]

Yes it was showing Invalid API Key and it was not generating the Config Options in Module section

The API key was correct

How to solve this issue

Latest WHMCS version 8.1.3

[sqpp]

Obviously you add the IP address of the WHMCS server in Vultr...

[Vsnumimmy]

Obviously you add the IP address of the WHMCS server in Vultr...

Had tried whitelisting the Server IP/32 on Vultr API Even though it was not working and showing same error

[hakhan201]

Obviously you add the IP address of the WHMCS server in Vultr...

Had tried whitelisting the Server IP/32 on Vultr API Even though it was not working and showing same error

Same here :(

[sqpp]

Try to make a Curl Request to the Vultr API and see how does it responds, I believe something is blocking your connection from the server where WHMCS is hosted on.

[Vsnumimmy]

Try to make a Curl Request to the Vultr API and see how does it responds, I believe something is blocking your connection from the server where WHMCS is hosted on.

Thanks I had solved it

I had made an CURL Request from server and it was connecting using IPV6 But the IPV6 was not whitelisted in the Vultr API.I had enabled the IPV6 Address and it was working

[sqpp]

Glad to hear it man!

[amit510]

Try to make a Curl Request to the Vultr API and see how does it responds, I believe something is blocking your connection from the server where WHMCS is hosted on.

Thanks I had solved it

I had made an CURL Request from server and it was connecting using IPV6 But the IPV6 was not whitelisted in the Vultr API.I had enabled the IPV6 Address and it was working

Thank you for saving me troubleshooting time!