There was a post pertaining to mapped drives several months ago. @AlnoorCassim posted that when Sage began supporting MS Vista (V4.3?), the mapped drive was no longer a requirement. However, if the network DNS is not configured properly the users may experience slow performance in Sage 100. For that reason, I map a drive, turn off UAC during the WS install, and then check the path in the Sage shortcut and verify a the path has a mapped drive. Good to eliminate one variable if there is slowness.