Unexpected error from external database driver

While uploading Excel files to DB server some files cannot be uploaded开发者_JAVA百科. This error was caused while getting the column names of that excel file using the function:

dtExcel = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Columns, Nothing)

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Seems like problem with Excel OLEDB driver and/or connection string

Try these posts

1. Diagnosing an OLEDB exception when Quering Excel 2010
2. http://connectionstrings.com/excel-2007