>When I use the SaveTableToWorkBookEx(), the XLSX file is created faster. But when trying to open the resulting XLSX file, I get an error message (from MS Excel):

We found a problem with some content in 'TEST_VER10_EX.XLSX' Do you want us to try to recover ....

>I said Yes.
>The XLSX file is open with the message:

Repaired Records: String properties from /xl/worksheets/sheet1.xml part

>Using SaveTableToWorkBook() is slower but no error message.

Can you send the table that you are using? I would like to debug with it to see why. If the table is not available (a cursor from a backend server) then please send the created workbook before opening with Excel. Also what version of Excel are you opening the file with?