You cannot open .xls files by using Microsoft Office Excel 2010

Symptoms

After you install Microsoft Office 2010, you cannot open .xls files, and you may receive the following message:
The file is corrupt cannot be opened.

In addition, you may experience a problem in which any Microsoft Office programs, such as Word or Outlook, crashes when you open .xls files. 

Resolution


Follow these steps:
  1. Click Start, click Control Panel, click Programs, and then click Uninstall a program under Programs and Features.
  2. Select Microsoft Office.
  3. Click Change, and then wait while the change and repair is carried out. 
  4. Exit after the process is completed.
  5. Double-click the Excel file that you want to open or open the file through an HTML link as you could by using previous versions of the program. 
Properties

Article ID: 2528682 - Last Review: Dec 1, 2011 - Revision: 1

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