Icon composer icon contains alpha channel upload error

When creating an icon using icon composer, I cant upload a build to testflight/App Store connect.

Running on device from Xcode works fine, but as soon as I archive and upload to App Store Connect, I get an error saying the icon contains an alpha channel

Thanks for those details, @JackB321. I don't have a workaround to offer you for that configuration right now, but we are investigating the root cause and understand the impact of this issue.

However, your mention of the released Xcode version here is surprising — are you using that as a vehicle to submit an app built with Xcode 26? And does the build you are submitting from Xcode 16 have icons from Icon Composer?

— Ed Ford,  DTS Engineer

Same problem here. Using Xcode 26 beta 6 and the latest version of icon composer (checked today). If I get the icon composer exported icons and use Preview to remove the alpha channel, I can submit with no problems, but the whole point of icon composer is to have those transparency/Liquid Glass effects…

Getting the same issue 'ITMS-90717: Invalid large app icon' when building my app on Xcode Cloud using the latest beta versions.

The versions listed in the workflow are as follows: Xcode Version: Xcode 26 beta 6 (17A5305f) macOS Version: macOS Tahoe 26 beta 7 (25A5346a)

Hoping for some updates to this issue soon!

Through trial and error I have found what causes this issue (at least one cause.- maybe there are more).

The problem for me was caused by the combination of two things:

  1. Having the "Blur" option switched on for one of the groups in the Icon Composer file
  2. For that group, having at least one SVG sitting near the edge of the canvas. I'm not sure exactly where the line is, but if your SVG is in the middle, it doesn't trigger the issue - even with Blur turned on. It only shows up once your SVG is near the edge.

So for me, the fix was to turn off the blur setting on the group that had an SVG near the edge.

I followed @nachojackson's fix, and that allowed me to proceed with the submission. I miss some of the subtlety the blur gave, but for now, this will do. Going to try an Xcode Cloud archive later today.

Still occurring on ios 26 beta 8 and Xcode 26 beta 7.

Still occurring 2 days before when RC app submissions are likely to occur. Maybe this gets fixed via a backend rollout but im not confident.

My FB has ”no similar reports”

Icon composer icon contains alpha channel upload error
 
 
Q