WHMCS uses a local key licensing system with periodic remote verification checks.
Every 7 days, your WHMCS system will contact WHMCS servers to ensure it is being run in the correct location and that the license is valid.
Should the licensing server be down on the day your next verification check is due, then the system will allow up to 3 days for a connection to be made.
If after this time, the system is still unable to verify your license with the licensing server, your WHMCS Admin Area will become inactive until it can contact our server again.
If you have purchased your license directly from WHMCS, you can reissue your license from our client area at http://whmcs.com/members.
Just log in, go to Services > My Licenses, select your license key and click Reissue under the Management Actions tab.
Then visit your WHMCS installation in the new location and it will save the new valid access details for it.
If you have bought your license Web Hosting Magic (we are Platinum Partner and Authorized WHMCS Reseller) or have purchased a reseller hosting package that came with a WHMCS license, you can use the license from us with the existing WHMCS installation.
The same is applicable if you moved to a new IP.
You may want to have your license updated.
To change the license key your WHMCS system use, please log in to the admin area and go to Help > Change License Key.
You can then enter your new license key there along with your admin login details to verify the change.
Then contact us when you have done this so we can update the license for use at the new location.
Please note that it is not possible at this time to take your license key with you if you are moving to a different hosting provider.
A new license key will be required for use at the new location.
Even when you have an invalid or expired license to ensure your client's access is not interrupted, it is comforting to know that your WHMCS Client Area will always remain online without distribution to your customers.
If you are getting a license invalid error that you are unable to login, there is also a link to the change license page from the license error page.
If the issue persists, please do contact us for assistance regarding the license update.
