As I can see here http://www.sqlstrings.com/MS-Access-connection-strings.htm
one could
Open connection to Access database located on a remote server:
"Provider=MS Remote; Remote Server=http://Your-Remote-Server-IP; Remote Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\App1\Your_Database_Name.mdb"
Did someone try this : access MS Access DB stored on a windows or http server from a winform app ?