Preview of thumbnail white in iphoto

amh276,

We appreciate you trying those steps and following up with us. Let's see if the issue is in the library in that case. Try following the steps in this article: Get help with the Photos app on your Mac Specifically you will want to follow this section:

If you're having other issues with Photos

If you're experiencing other issues—like missing or blank photo thumbnails, unexpected behavior, or if Photos won’t open—try to see if it's an issue with your library by following these steps.

Create a new Photos library and see if your issues persist:

Quit Photos.

Press and hold the Option key while you open Photos.

In the dialog that appears, click Create New.

Give your new library a name, then click OK. Note whether Photos opens successfully with this new library.

To return to your main Photos library, quit Photos. Then open it again while holding the Option key, select your main library, and click Choose Library.

Alternatively, you can open Photos in another user account on your Mac and note whether Photos opens successfully.

If Photos opens with the new library, or in a different user account, it might mean that there's an issue with your library. Follow the steps to use the Photos library repair tool on your main Photos library.

We hope that helps! Take care.

Hello amh276!

We see you are having some trouble with the preview of a file not showing in the thumbnail. We are happy to help. Try going to Finder > View > Show View Option > Show icon Preview > Enabled. That should have all of those thumbnails appear again.

Have a great rest of your day!