Table of Contents
Authentication Failed
The DHL Express API wasn’t able to verify if the entered credentials are valid. The problem is usually caused by the security plugins or firewalls interrupting with the DHL Express API connection establishment. Please deactivate the security plugins, firewalls and/or any additional plugins which may have an influence on this situation in order the authentication process to succeed. Please also make sure that the Site Id and Password fields have not been filled in with the test credentials by mistake or the Test Credentials checkbox has not been accidentally ticked.