snake Posted September 10, 2014 Share Posted September 10, 2014 We have a several apps which use the WHMCS API, but since upgrading to 5.3.9 they cannot connect any longer. I am getting error "Authentication Failed" The only thing that has changed is the version of WHMCS, nothing else has changed. But the authentication details are correct. They had not been changed, however I reset them anyway just to exclude that possibility. The apps are on the same server as WHMCS, and this IP is allowed as it always has been. anyone got any idea what it could be ? 0 Quote Link to comment Share on other sites More sharing options...
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