DatabaseDoesNotExist error

The instance you're connecting to doesn't have a database yet (specified through DB_NAME).

Follow the instructions to create a new database in the Studio.

InvalidAuth certificate error

If RavenDB returns an InvalidAuth response with a message like:

This server requires client certificate for authentication, but none was provided by the client.

The provided certificate may not be the right one, may have the wrong password, or may lack permissions. Double-check that the certificate works locally.