getting an Unexpected error from external database driver (1) when importing data from excel to access

Question

I have a 2010 Excel file with a sheet that spans 34864 rows and 1387 columns. I\'m trying to import it into Access 2010 with

Answer 1

I had same issue, after getting a security update in Windows7 this error occurred. We have too many excel files to perform an open/close operation so I decided to try other ways.

1- Return a restore point when Access worked fine: It did not work in my case. The only change in software configuration is a security update and it seems security update still causes problem.

2- Reducing rows, columns etc: It did not work for me; first file that access tried to reach had 10k rows, reducing this rows to 3 was not the solution.

3- Trying to modify connection string: It did not work for me, it is not very reasonable as well; connection has been working for years, suddenly why would it stop? In some cases it does but not this time.

4- Uninstalling most recent security update worked for in my case. Here is the uninstalled security update.

Screen shot of uninstalled security update

Good luck with solving.

Answer 2

Use this

OleDbConnection conObj = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\a.XLS;Extended Properties=Excel 8.0;")

instead of this

OleDbConnection conObj = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\a.XLS;Extended Properties=Excel 8.0;")

Answer 3

In my case (I has the same error) the problem was that I had the Access DB stored on a network drive which ran out of space (not enough free space for the import to finish). I freed up space and compacted the DB; the error didn't appear again.

Answer 4

hi I am also facing this error when import .xlsb file. After that i copied the contents to another xlsx file then import this xlsx file.