C# Excel 2010 Workbook Open error

Question

We recently upgraded from Excel 2007 to Excel 2010, and we have found that existing code started failing.

Exception Message:

Office has detect

Answer 1

We had the same issue. Our SSIS package at SQL server uses Excel.Interop to parse files. One day we installed Office 2010 x64 on new server and for some files started getting error:

Office has detected a problem with this file. To help protect your computer this file cannot be opened.

At the same time, other servers work good. We found distinguish in versions of Excel: 14.04763.1000 doesn't work, but 14.0.7015.1000 works for us. The last version number belong to Office 2010 SP2. Eventually we downloaded SP2 and installed it,as result, the error has gone.