What causes Flutter Apple Sign In Error 1000?

Missing "Sign in with Apple" capability in Xcode's Signing & Capabilities tab, often wiped by pod installs or Flutter updates.

How to fix Apple Sign In error 1000 in Flutter?

Xcode > Runner > Signing & Capabilities > + > Sign in with Apple. Pod install, rebuild.

No — it's the native iOS config. Package fails instantly without the capability.

🛠️ Developer Tools

Flutter powers 42% of new iOS apps in 2024, yet error 1000 derails thousands during Apple Sign In. One missing Xcode toggle flips the script.

theAIcatchup Apr 10, 2026 4 min read

Flutter Apple Sign In Error 1000 stems from missing Xcode 'Sign in with Apple' capability, not server or token issues. 𝕏
AI debugging tools often miss platform-specific fixes; Google and forums deliver. 𝕏
Prevent with CI/CD checks — expect more cases as Apple privacy rules tighten. 𝕏

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Originally reported by Dev.to