So, presumably that is the folder that contains the data file on your own development machine. The reason that the connection string is placed in the config file is specifically so that it can be edited after deployment in case the the database is in a different location. The user needs to edit the connection string to use the path of the data file on their machine.Provider=Microsoft.ACE.OLEDB.12. 0;Data Source="C:\Users\jallasSQL\Documents\Computer Engineer.accdb"