Following the documentation here also did not work for me. https://developer.apple.com/documentation/xcode/creating-your-app-icon-using-icon-composer#Add-your-Icon-Composer-file-to-an-Xcode-project What worked for me was the following: In Icon Composer, select File -> Export... For "Appearance", select "All", then click "Export..." Select a location and click "Export" to save Navigate to the location you saved, there should be 6 .png files. Select the three you will use for AppIcon from assets for Any Appearance, Dark, and Tinted options. Open those in Preview In Preview for each image, select File -> Export... Be sure to uncheck the "Alpha" setting and save the file. Use the newly exported images for your three AppIcon settings in Assets.