• Whmcs Trial License
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Contents.License InvalidA Licence Invalid error on the admin login page can be caused by one of the following changes:. The license key has been entered incorrectlyPlease ensure the full key is entered, this includes the prefix eg. 'Leased-', 'Owned-', 'WebHost-', 'WHMCS-' and 'Dev-'.

The domain being used to access your install has changed. The IP address your install is located on has changed. The directory you are using has changedFollowing any changes to the location of your WHMCS installation, the licence must be updated accordingly. Please refer to for instructions on doing so.Specific Errors Required function base64decode is not availableThis error indicates that your server has the required base64decode function disabled in your PHP configuration.

Please adjust your website's PHP configuration so as to enable the base64decode function.It may be necessary for the function to be added at the server level. The following links might be helpful in accomplishing this on your server:.If you need further assistance, you may need to reach out to your web host or systems administrator to resolve this.Required function is not availableThis error will appear when a necessary CURL function has not been installed on your server or is disabled in the configuration. The error message will specify the required function which has been disabled, eg:.

curlinit. curlsetopt. curlexec.

curlgetinfo. curlerror. curlcloseAll of these functions must be installed and enabled on your server in order to properly validate your license. You can check to see if these functions are available on your server by:. Creating a PHP Info page, as described in the. Visiting the PHPInfo page in your browser. Referring to the 'disablefunctions' section.

Whmcs Trial License

If the functions in the above listed are present under disablefunctions, the functions are disabled on your server. It will be necessary to enable them to resolve the licence error.The following links might be helpful in accomplishing this on your server:.If you need further assistance, you may need to reach out to your web host or systems administrator to resolve this.Curl Error: Couldn't resolve host (6)A CURL code 6 error indicates an inability for your DNS to resolve the WHMCS licensing server. This could indicate a temporary issue with your DNS provider, or a larger misconfiguration.If these points have been eliminated, check your Zone files for the presence of an entry for whmcs.com and remove it if found.Curl Error: Couldn't connect to host (7)A CURL code 7 error indicates an inability to connect to the WHMCS licensing server.

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This is typically caused by a firewall configuration. CURL uses port 443 for secure connections, so ensure that connections are permitted on this port.Curl Error: Connection refused - Code 7SeeCurl Error: Problem with the SSL CA cert (path? Access rights?) - 77SeeCurl Error: error setting certificate verify locationsSeeOutdated Root CA BundlesThe license validation is performed via an SSL connection. This helps to ensure the security and integrity of license checks.Errors can occur when placing the CURL call using the 'curloptsslverifypeer' function if your server does not have the appropriate root certificate authority (CA) bundles to validate the SSL connection to our licensing server. This can be caused by the CA bundle files being missing or outdated.Note: This error does not relate to the validity or existence of an SSL certificate on your own website. The CA bundles referred to here are located on the server side at root level.Frequently updated CA Root Certificates are available from your Operating System's repository or the cURL website atIf you are unsure how to check for these certificates or update them, we recommend that you contact your web host or systems administrator for assistance.Other Curl Error CodesOther CURL error codes are detailed in the official documentation at.