Exporting a file as a previous version  in Microsoft Office 2019

1. Open the SSGreenGroupCC.pptx presentation.
2. Click on File | Export.
3. Click on Change File Type.
4. Choose a Presentation FileTypes option from the list provided. For this example, we willchoose PowerPoint 97-2003Presentation (*.ppt):

5. Click on Save As,then navigate to a folder location to save the presentation to.
6. Change the name of the presentation (if required) and clickon Save tosave the changes. The compatibility checker populates with any errorsthat may be found due to elements of PowerPoint not being available inprevious versions.
7. Click OK to continue:

The presentation title bar reflects that the presentation is saved ina previous version (.ppt) in the filenameand [CompatibilityMode] is noted after the filename. Please note thatthe preceding explanation applies to Word, Excel, PowerPoint, and Access2019.