Driver eka install karapan. etakota oya error eka hari yai.
you have to install OLEDB driver for Access; download it from here : https://www.microsoft.com/en-us/download/details.aspx?id=23734
මොකක්ද driver එක ?
+++
Did you try the above? Usually works.
If it didn't work for you try this as well
http://www.microsoft.com/download/en/details.aspx?id=13255
Also if your application is ASP.NET then it's a bit complicated than that - then you get this error because the 64 bit calling process looks for the 64 bit dll and you probably have the 32 bit.

