Problem opening Excel files

I use POI library to create xlsx files using the class XSSFWorkbook. If i open the created file with double-click using "Windows Explorer", Excel 2007 runs ok i can see the numbers correctly. But opening the same file from Excel 2007, using Menu -> Open, every number with 8 or more digits is t

Re: Problem opening Excel files

On Fri, 30 Sep 2016, Fende wrote: I use POI library to create xlsx files using the class XSSFWorkbook. If i open the created file with double-click using "Windows Explorer", Excel 2007 runs ok i can see the numbers correctly. But opening the same file from Excel 2007, using Menu -> Open, every