![How to fix “File is not in a recognizable format” error when opening EXCEL(x) 2007 -2010 files. How to fix “File is not in a recognizable format” error when opening EXCEL(x) 2007 -2010 files.](https://www.wintips.org/wp-content/uploads/2014/07/image_thumb50-150x150.png)
How to fix “File is not in a recognizable format” error when opening EXCEL(x) 2007 -2010 files.
In a Windows 7 based computer with Office 2003 (Pro) and the 'Microsoft Office Compatibility Pack for newer versions of Word, Excel, and PowerPoint File formats' already installed, the following error appeared when the user tried to open Excel workbooks that were created in newer Office