Failed to register bundle identifier iOS Origin: On your device Last updated 10 Oct 2026

Failed to register bundle identifier: The app identifier "com.x" cannot be registered to your development team because it is not available

Another developer team already owns that bundle identifier, so Xcode can’t create it for your team.

Exact message you may see Failed to register bundle identifiercannot be registered to your development team because it is not availableis not available. Please enter a different string
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Seen on: iOS

Meaning

Bundle IDs are unique across all Apple developer accounts. Sample code and tutorials (com.example.app) are almost always taken.

Common causes

  • Bundle ID already registered by another team
  • Using a sample project’s identifier
  • Free team limits on new App IDs

⚡ Quick fix

  1. Change the bundle identifier to a unique reverse-DNS value you own
  2. Use the same prefix for extensions (com.you.app.widget)

Detailed fix by platform

Xcode

  1. # Target → General → Bundle Identifier: com.yourcompany.yourapp

How to diagnose

  1. ID — Unique to you?
  2. Extensions — Prefixed with the app ID?

🔧 Still not fixed?

Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:

Where this error sits

Origin: On your device. Errors that are often confused with or caused by this one (click to open):

Command CodeSign failed — Command CodeSign failed with a nonzero exit code (errSecInternalComponent / resource fork, Finder information not allowed) (iOS)Command CodeSign fail…doesn't include signing certificate — Provisioning profile "x" doesn't include signing certificate "Apple Development: Name (ID)" (iOS)doesn't include signi…doesn't include the currently selected device — Provisioning profile "x" doesn't include the currently selected device (iOS)doesn't include the c…integrity could not be verified — Unable to Install "App": This app cannot be installed because its integrity could not be verified (iOS)integrity could not b…No signing certificate — Xcode: No signing certificate "iOS Development" found (iOS)No signing certificateSigning requires a development team — Signing for "App" requires a development team. Select a development team in the Signing & Capabilities editor (iOS)Signing requires a de…Untrusted Developer — Could not launch "App": process launch failed: Security / Untrusted Developer (iOS)Untrusted DeveloperFailed to…

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