Common iOS issues

How to overcome common issues building mobile apps on Codemagic

iOS errors regarding creating authentication sessions

When App Store Connect is not correctly set up, users might encounter an error message similar to the following:

altool[xxx:xxx] *** Error: Unable to validate archive '/Users/builder/ipas/xxx'.
altool[xxx:xxx] *** Error: code -22020 (Unable to validate your application. We are unable to create an authentication session.)

The most common reason for this error message is using your Apple ID password instead of app-specific password in App Store Connect publishing settings.

To generate an app-specific password, sign in to your Apple ID account page, navigate to the Security section, and click Generate Password… below App-Specific Passwords. The generated app-specific password will be in this format: abcd-efgh-ijkl-mnop. Insert this value into the Flutter workflow editor or as a password in codemagic.yaml when setting up publishing to App Store Connect. Note that the password should be generated with the same Apple account that you are using for publishing.

iOS code signing troubleshooting

This is the list of the most common issues that may cause iOS code signing errors during a CI build.

  • The uploaded certificate is in a wrong format or corrupt. Codemagic looks for a certificate in Personal Information Exchange (.p12) format. See how to export the certificate.

  • The uploaded certificate and provisioning profile do not match. For example, you’re using a development certificate and a distribution profile to sign the build, or the certificate used for signing is not included in the provisioning profile.

  • You don’t have the required entitlements enabled for your app in the Apple Developer portal. In such cases, you will often see an error message similar to this one:

    Code Signing Error: “Runner” requires a provisioning profile with the Push Notifications feature. Select a provisioning profile in the Signing & Capabilities editor.

    Check your app’s entitlements by going to Apple Developer portal > Certificates, identifier & profiles > Identifiers > App ID.

  • You haven’t specified the iOS scheme to be used for the archive action of Xcode build. This applies when your app has custom iOS schemes. By default, Codemagic builds the Runner scheme, but you can use the CM_FLUTTER_SCHEME environment variable to specify another scheme.

  • The bundle ID you have entered in automatic code signing setup on Codemagic does not match the bundle ID in the build configuration that is used for archiving the app with Xcode. Codemagic assigns provisioning profiles to the build targets and configurations before building the iOS app. That assignment is based on the bundle ID match in both provisioning profile and the build configuration. In the case signing configuration is not assigned to the build target/configuration that is used for archiving, the build will fail.

iOS build hangs at Xcode build done

Description: When building for iOS, the build gets stuck after showing Xcode build done in the log but does not finish and eventually times out.

Log output:

== Building for iOS ==

== /usr/local/bin/flutter build ios --release --no-codesign ==
Warning: Building for device with code signing disabled. You will have to manually codesign before deploying to device.
Building net.butterflyapp.trainer for device (ios-release)...
Running pod install...                                              3.7s
Running Xcode build...
Xcode build done.                                           203.6s

Flutter: 1.7.8+hotfix.3, 1.7.8+hotfix.4, 1.9.1+hotfix.2, 1.9.1+hotfix.4, 1.9.1+hotfix.5

Xcode: N/A

Solution: This is a known issue that occurs randomly and can be traced back to Flutter:

This issue is known to be fixed on the master channel.

iOS build errors with Provisioning profile

This is the list of the most common issues that may cause iOS provisioning profile errors during a CI build.

You are using an outdated Provisioning profile that does not include Associated Domains.

In such cases, you will often see an error message similar to this one:

❌ error: Provisioning profile "CodeMagic" doesn't support the Associated Domains capability. (in target 'Runner' from project 'Runner').
❌ error: Provisioning profile "CodeMagic" doesn't include the entitlement. (in target 'Runner' from project 'Runner').


Log in to your Apple Developer account and verify:

  • That you are using the correct bundle identifier.
  • If missing, add the Associated Domain Entitlement from there.
  • Update the provisioning profile and use it to configure your project.

The bundle identifiers are not properly set for your project.

In such cases, you will often see an error message similar to this one:

❌ error: Runner has conflicting provisioning settings. Runner is automatically signed, but code signing identity Apple Push Services has been manually specified. Set the code signing identity value to “iPhone Developer” in the build settings editor, or switch to manual signing in the Signing & Capabilities editor. (in target ‘Runner’ from project ‘Runner’)


  • Confirm that you have set the correct bundle identifiers for all targets in Xcode.
  • Verify that the bundle identifier set in Xcode matches the bundle identifier set in the Flutter workflow editor under code signing.

iOS deployment target issue

A common error message with regard to deployment target is the following:

The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.4.99

The error usually occurs if the deployment target set in Podfile is lower than required or when the Podfile is missing.


  • Confirm if a Podfile exists in the repository. If not, create a Podfile in the ios directory and insert the following manually in there:
# Uncomment the next line to define a global platform for your project
platform :ios, ’10.0’
target 'Runner' do
  # Comment the next line if you don't want to use dynamic frameworks
 # Pods for Runner
  • Check the Podfile and make sure that platform :ios, ’10.0’ is set to 10.0 or above as required by dependencies.
  • Confirm if IPHONEOS_DEPLOYMENT_TARGET is set to 9.0 or above