Into the Digital World

Just want to share this tips for those who are using excel application encountering this issue when opening excel files:

But when you open the files inside excel it working, This my occur if the Ignore other Applications setting in Excel is selected.

Microsoft Excel 2010

1. Click the File tab, and then click Options.
2. Click Advanced, and then click to clear the Ignore other applications check box in the Generalarea.
3. Click OK.

Microsoft Office Excel 2007

1. Click the Microsoft Office Button, and then click Excel Options.
2. Click Advanced, and then click to clear the Ignore other applications check box in the Generalarea.
3. Click OK.

Microsoft Office Excel 2003 or earlier versions of Excel

1. Click Options, on the Toolsmenu.
2. Click the Generaltab.
3. Click to clear the Ignore other applications check box, and then click OK.

After you do this, you should be able to open workbooks by double-clicking them in Windows Explorer.