Adobe Experience Manager: Content Fragments Console accessing issue

The solutions to this are: after removing the configuration, the Content Fragments Console will be accessible, or updating the externalizer configuration to the correct author URL.

Description description

Environment

Adobe Experience Manager (AEM)

Issue

When attempting to access the Content Fragments Console from the top level of the Global Navigation, an error screen is displayed:

Connection Error
Please verify the Adobe Experience Manager repository you are attempting to connect to or contact Adobe support.

Resolution resolution

The issue can have two different and unrelated root causes:

The issue could be caused by having a custom CORS config in the environment.

User configuration:   {   "supportscredentials":true,   "supportedmethods":[    "GET",   "HEAD",   "POST"   ] ,   "maxage:Integer":86400,   "alloworigin":[    "*"   ] ,   "supportedheaders":[    "*"   ] ,   "allowedpaths":[    ".*"   ]    }

After removing the configuration, the Content Fragments Console will be accessible.

The second root cause for the same issue was due to the OSGi configuration of the Day CQ Link Externalizer which was changing the Content Fragments Console URL as per below:

The Content Fragments Console was accessible after updating the externalizer configuration to the correct author URL.