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Saturday, December 11, 2010

Microsoft Excel 2007 error - Trying to open a different format than specified by the file extension

On Microsoft Excel 2007, you may get the following error when you try to open an Excel document:

A quick and dirty but easiest way to solve this problem, is to insert the following registry key. This will simply suppress the notification:


The step-by-step instructions are as follows:

  1. Click Start, click Run, type regedit.exe and press ENTER. This will open your Registry Editor.
  3. Right click in the right window and choose New → DWORD
  4. In the Name field, type ExtensionHardening.
  5. Verify that the data has the value 0.

1 comment:

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