Linked Server Error

EXEC sp_addlinkedserver
    @server = 'ExcelServer2',
    @srvproduct = 'Excel', 
    @provider = 'Microsoft.ACE.OLEDB.12.0',
    @datasrc = 'E:\Emp_database.xlsx',
    @provstr = 'Excel 12.0; IMEX=1; HDR=YES';


After creating a linked server i executed below query :

    SELECT * FROM OPENQUERY
    (ExcelServer2, 'SELECT * FROM [Sheet1$]')

Error Message :

OLE DB provider "Microsoft.ACE.OLEDB.12.0" for linked server "ExcelServer2" returned message "Unspecified error".

Msg 7303, Level 16, State 1, Line 1

Cannot initialize the data source object of OLE DB provider "Microsoft.ACE.OLEDB.12.0" for linked server "ExcelServer2".

        Please help me on this very emergency.

Thanks in Advance....