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    Have you received a Microsoft PowerPoint 2007 (pptx) document and are unable to open it? In 2007 Microsoft introduced Office with a new file format that could not automatically be opened by previous versions of Microsoft PowerPoint. (Other office programs have changed as well; Word fles ending in .doc are now .docx, and Excel .xls files are now .xlsx)

    Convert pptx files to ppt instantly

    In 2007 Microsoft changed their PowerPoint file format from .ppt to .pptx. The 'x' signifies xml, a new open format for storing data. Unfortunately Office 97, 2000, and 2003 do not support this format and you will get errors when opening pptx files in those versions.

    One way to solve this problem is to convert your pptx format to the previous ppt format so you can open files in older versions of Powerpoint. instantly converts your file in seconds!

    Convert Office 2007 pptx to Office 2003 ppt

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