You can simply re-save PPSX presentation to PPSM format. This will in turn enable the use of macros in it.
Convert Microsoft PowerPoint 2007/2010 Open XML complete slide show to Microsoft PowerPoint macro-enabled Open XML complete slide show.
We found 2 software records in the database related to .ppsx to .ppsm file format conversion.
Microsoft Windows software - convert ppsx to ppsm on Windows
A presentation program from the Microsoft Office suite
Convert from ppsx file format
|Yes, Microsoft PowerPoint supports ppsx file conversion as a source file type.||Yes||Yes||ppsx editor||Yes||No||No||No|
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned ppsx to ppsm. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert ppsx to ppsm on OS X
Mac version of popular presentation software from Microsoft