Excel nao abre

In the Open box, type regedit, and then click OK.

Locate the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Office\9.0
Right-click the Excel key, and then click Rename.
Type OldExcel.

Locate the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Office\9.0
Right-click the Excel key, and then click Rename.
Type OldExcel.

On the Registry menu, click Exit to quit Registry Editor.

Start Excel, and then quit Excel.
Double-click the Excel workbook icon (or right-click the Excel workbook icon, and then click Open) to open the file.

In the Open With dialog box, click Microsoft Excel for Windows, and then click OK.