c# 4.0 - can not import Excel files to my site -


i make website using asp.net c#
on-site access data excel file
website on computer works without errors
, on website server , when set excel file please click on button lift gives me following error

"the 'microsoft.ace.oledb.12.0' provider not registered on local machine."

my conection string :

oledbconnection oldbcon = new oledbconnection("provider=microsoft.ace.oledb.12.0;data source=" + path + ";extended properties='excel 12.0 xml;hdr=no;imex =1 ;impoertmixedtypes = text;typeguessrows = 0'");


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