My Photos option is missing when setting a Screen Saver

Which system version is running on your Mac, samanthafromtarzana ?

Only the photos from your system photos library are visible for the screensaver. Have you enabled your current Photos Library as your System Photos Library? You may want to check the Photos > Settings > General - the button "Use as System Photos Library" should be dimmed.Is it? If not, klick it, then restart your Mac.

You should now be able to access your Photos Library fin macOS 26 Tahoe rom the System Settings > Wallpaper > Screensaver > Options Photos Library.

I've heard about this, and there seem to be a couple of possibilities. It's hard for me to test, since Photos shows up in my own Screensaver dialog.

#1. In Photos, select a picture and go to "Share" at the top, or right-click to get the Share option. If Wallpaper appears there

Choose that. In addition to that setting that picture as your wallpaper, it should cause Photos to show up in Settings. Oddly, "Set Wallpaper" doesn't appear for me.

#2. If "Set Wallpaper" doesn't appear in the Share menu, try doing a Safe Restart. This bypasses certain potentially disruptive processes, and it often helps. Safe Mode is different for different computers, so see this: 

           Start up your Mac in safe mode - Apple Support 

Then try the Share>Set Wallpaper" thing.

#3. If that doesn't work, make a new user and see if the same problem recurs with it.  (This is how I got that screenhot-- I had to go to a different user on my Mac.) To open Photos for this New User, you may have to use the Library Picker by closing Photos and then option-clicking on the Photos icon. Then try the Share>Set Wallpaper" thing in Photos with this new User.

Have you used "Virus killer," or "Mac Cleaner" apps on you Mac? Do you have Login items that you don't recognize?

Let us know how this goes…

whine wrote: …done all things except for a SAFE reinstall

There may have been a misunderstanding. The "restart in Safe mode" is not a reinstall or anything crazy-- it just re-boots the Mac, avoiding some caches and without running some things like login items. It's easy, but there are extra buttons to push when re-starting, and I write down the steps in case I forget. Safe Start is a great diagnostic tool.

I am having the same issue on my screen saver selection window. Upgraded to Tahoe 26.2 a few days ago. My Photo library is the System Photo Library. All the photos have been re-indexed. And yes, I have rebooted and done all things except for a SAFE reinstall to make sure my Mac mini M2 is working fine.

When I select the Custom button, it only lets me select the macOS or Landscape option visible in the initial window. The screen saver selection window is effectively frozen as far as any movement vertical or lateral goes. What I see on the attached screen shot are my only options.