According to Yash, the CFRegistry tag was recently disabled. On CFMX this affects the CFApplication tag if client storage is left to it’s default or set to “Registry”.
At default, the CFApplicaiton tag has a parameter of clientstorage with a default value of Registry. By disabling the CFRegisty tag, this creates a conflit. To resolve the problem, the CFApplicaiton tag MUST include the clientstorage=“Cookie” or clientstorage=“Datasource_Name” to ensure that CFMX does not try to access the registry.