SUMMARY:
This technical note documents an issue that occurs when trying to connect to the MDX Cube Catalog to import cubes from an Essbase data source.
SYMPTOM:
After creating a database instance to connect to an Essbase data source, the MDX Cube Catalog cannot be accessed and the following error appears:

Error in accessing information from the external data source. Local////Error(1042032) Network Error: Failed to retrieve host information for [provider=essbase] Local////Error(1030818) Login failed. Please check if server and port are correct.

When using the XMLA provider instead of the Strategy MDX Cube Provider, the following syntax is also allowed:
Provider=Essbase;Data Source=essbaseSeverName