How do I get slideshow to show all 200 images in a file in 'my pictures'?

Windows 11 does not support a full-screen photo slideshow with settings to show all pictures in random order or control the speed the way older versions did. The built-in Photos app in Windows 11 no longer includes those classic slideshow options.

Two simple options are supported:

1. Use desktop background slideshow

• Open Settings > Personalization > Background.
• Choose Slideshow.
• Select the folder that contains the 200 pictures.
• Turn on Shuffle if wanted.
• Choose the time interval.

This works for the desktop background, not for a full-screen photo viewer.

2. Make sure Windows is using the correct folder

• In Settings > Personalization > Background > Slideshow, select the exact folder in My Pictures that contains all 200 images.
• If pictures are spread across different folders, only the selected folder will be used.

If the goal is a full-screen slideshow and Windows keeps looping only a smaller set, that feature is limited in Windows 11 Photos. A practical workaround is to use Photos Legacy or another slideshow app.

References:

• How can I start a photo slideshow with random sequence and adjustable speed like Win 10? - Microsoft Q&A
• Change the desktop background in Windows