So I am essentially trying to link a table via DAO from an ACCDB that is password-encrypted into the DB I am working in. The premise of what I am doing is that the data is sort
Tables and queries share the same name space in MS Access. Chances are you have a query with the same name as the table you are trying to link.
Also, Environ("username")
is easily spoofed. Consider using the API function GetUserName instead. Of course, if you need real security you'll want to upgrade your back-end to SQL Server (Express) or some other RDBMS.