Processed internal TestFlight builds fail to install: “The requested app is not available or doesn’t exist”

Hi, I’m seeing a strange TestFlight issue.

My builds process successfully in App Store Connect, appear in TestFlight, and are assigned to internal testers, but installation fails immediately with:

“The requested app is not available or doesn’t exist.”

What I’ve verified: • builds are processed/completed • apps are visible in TestFlight • internal tester groups are configured • agreements/banking/tax are active

This affects multiple apps in the same developer account.

The issue started after adding a widget extension and moving to a new Swift-based workflow, so I’m trying to isolate whether this is: • signing/provisioning/entitlements • widget extension misconfiguration • or a backend issue on Apple’s side

I’ve already contacted Apple Developer Support and submitted Feedback Assistant reports.

Has anyone seen this exact behavior before?

I am facing the same issue. I made a build, and it went perfectly in App Store Connect. When I opened it up in Test Flight and clicked on Install, it says the requested app is not available or doesn't exist. Does anybody know what the fix is for this?

Processed internal TestFlight builds fail to install: “The requested app is not available or doesn’t exist”
 
 
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