How to merge multiple PowerPoint ppt/pptx presentation files into one single file automatically?

I wanted to merge several PowerPoint pptx files into a single (new) presentation automatically

How-I-fixed-it:

I found a PowerShell Script here to get this done (requires PowerPoint to be installed on the computer executing the script):
https://gallery.technet.microsoft.com/office/Merge-multiple-PowerPoint-49139f2c/view/

At the end of the script there are two examples showing the usage of the script.

Worked well for me to merge 52 presenations into a single one with 800 slides.

How to disable all animations in a PowerPoint presentation? / How to advance slides manually? / Präsentation ohne Animationen anzeigen?

Today i was asked, how to disable all animations in a PowerPoint presentation and how to manually change slides.
The presentation had some timings set up to automatically switch slides after some time and i wanted to disable this.

How-I-fixed-it:
I found the right hints here: http://www.worldstart.com/disable-animations-in-powerpoint/

Go to "Set up show". Under "Options" check "Presentation without Animation" and unter "Advance slides" select "Manually"

Here's the screenshot of the german Version "Bildschirmpräsentation einrichten", "Präsentation ohne Animation", "Nächste Folie Manuell"

Here's the screenshot of the english Version "Set Up Show", "Show without Animation", "Advance Slides manually".

 

Image source: http://www.worldstart.com/disable-animations-in-powerpoint/