Referring to a network location without volume label in VBA for Access 2013
Using the Linked Table Manager dialog, you can relink the front-end to the back end tables.  When you browse to select the back-end file, use a standard UNC network path instead of mapped drives.  For example, you would browse to "\filesvr2\NetworkFolder\SubFolder\Database.accdb".  This makes the front-end portable between any PC on your LAN that can resolve that file server by name.