Workbooks are opened in compatibility mode Excel 2010 or Excel 2007

Symptoms

When you open a new workbook in Excel 2007 or Excel 2010, it opens in [Compatibility Mode].

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Cause

This problem occurs because Excel 97-2003 workbook is selected as the default file format in Excel.

Resolution

To resolve this problem, follow these steps:

  1. Start Excel 2007 or Excel 2010. (In this article, we use Excel 2010 for example).

  2. Click File, and then click Options.

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  3. In the
    Excel Options window, click Save.

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  4. Under the Save files in this format drop-down menu, select Excel Workbook (*.xlsx), and then click OK.

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  5. Open an Excel file to confirm the issue is fixed.

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