Thread:Project:Support desk/Shared Database - How to?/reply (3)

Check this out, here's what I've got in my LocalSettings.php for the main wiki:

So, based on the above, I enter the following in both LocalSettings.php files:

And that prints the following error on both wikis:

The database in question does exist - Hence why I'm puzzled. What do I need to do? (Hoping this doesn't end like other questions and is actually resolved, I need this to happen)