Xcode Cloud builds fail at the export archive step. The critical log shows:
Account "Session Proxy Provider": Unable to authenticate with App Store Connect Error Domain=DVTServicesSessionProviderCredentialITunesAuthenticationContextError Code=1 "(null)"
And in DVTITunesSoftwareService.log:
App Store Connect response failed with unknown failure; response (null); error (null) error: DVTServicesSessionProviderCredentialITunesAuthenticationContextError.proxy
Environment: Xcode Cloud, iOS app, team type Individual (S43L28SVX2)
What I have ruled out:
- Regenerated all DISTRIBUTION_MANAGED certificates (per thread 744683) — portal API is reachable, certs issued successfully
- Removed an obsolete App Groups entitlement that was causing a secondary error — that error is now gone
- All agreements accepted, no pending legal items
- Failure persists across multiple builds with identical symptoms
The developer portal API responds correctly. The failure is isolated to the App Store Connect store configuration endpoint specifically, where the proxy returns response (null) — no HTTP response at all.
This appears identical to thread https://developer.apple.com/forums/thread/810658 where Apple confirmed the root cause was a backend API permission issue for the team requiring an Apple-side fix.
Support case 102857550486 was opened but redirected to admin support without technical investigation.
Has anyone else hit this recently, or can an Apple engineer look at the backend state for this team?