Solved-- Cannot Open PPTX File in PowerPoint 2010/2013/2016
OpenOffice.org 2.2 ○ Everything you need in an office productivity suite Writer - a word processor for creating dynamic documents Calc - a spreadsheet. - ppt download
Error: Can't read file, or Presentation cannot be opened - Microsoft Support
How to Open New Presentation File Formats in Earlier Versions of Microsoft PowerPoint
Free PowerPoint alternatives–OpenOffice.org - PowerPoint Tips Blog
3 Easy Ways to Open a PPT File on PC or Mac - wikiHow
Create and open a presentation in PowerPoint for the web - Microsoft Support
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