Cannot delete old thread credentials from keychain

[jhoogstraat]

iOS device model, version and app version

Model Name: iPhone 13 / iPad Pro 11"
Software Version: 26.3
App version: 2026.2.1

Home Assistant Core Version

2026.2.3

Describe the bug
I was able to remove all thread credential, except one, without any apparent reason.

To Reproduce
Its difficult to reproduce. You would have to clean the keychain, while keeping the thread network somehow. I honestly don't know how I ended up here.

Expected behavior
There are no credentials visible that are not present in the keychain OR at least they can be removed OR there is at the very least a information what is going on.

Screenshots

Additional context

Logs:

2026-03-02 11:36:52.858 [Error] [com.apple.NSXPCConnection.m-user.com.apple.ThreadNetwork.xpc] [ThreadCredentialsManagementViewModel.swift:64] deleteCredential(_:) > Failed to delete credential with error: Error Domain=ThreadCredentialsStore Code=12 "Das angegebene Objekt konnte nicht im Schlüsselbund gefunden werden." UserInfo={NSLocalizedDescription=Das angegebene Objekt konnte nicht im Schlüsselbund gefunden werden., NSUnderlyingError=0x151f70510 {Error Domain=NSOSStatusErrorDomain Code=-25300 "(null)"}}

[bgoncal]

Apple does not allow deleting what it considers the "preferred credentials", it's an API limitation

[jhoogstraat]

That is unfortunate, as the network does not exist anywhere anymore. I stumbles across this entry when commissioning matter devices failed using the app. The app uses the correct credentials, despite what is "preferred"?

[bgoncal]

The Home Assistant App uses the credentials that you have defined as preferred in the thread configuration panel, regardless of what is in your keychain before that.

[jhoogstraat]

Thanks for the information. Should be helpful to other people having issues connecting matter devices!

Sadly, commissioning does not work. Should I open another bug for this? I think the information given in the UI is not sufficient to understand what went wrong. It literally just says "pairing failed".

2026-03-02 15:41:33.115 [Verbose] [com.apple.NSXPCConnection.m-user.com.apple.ThreadNetwork.xpc] [WebViewExternalMessageHandler.swift:401] matterComissioningHandler(incomingMessage:) > Succeeded saving thread credentials in keychain, moving forward to matter comissioning
2026-03-02 15:41:39.606 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:41:39.610 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:41:39.611 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:41:39.756 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:41:39.778 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:41:39.887 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:41:39.895 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:41:40.437 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:41:40.443 [Error] [main] [SettingsStore.swift:462] gestures > Failed to decode gestures from settings
2026-03-02 15:42:13.476 [Error] [com.apple.root.user-initiated-qos.cooperative] [MatterWrapper.swift:72] commission > Matter pairing failed: Error Domain=com.apple.MatterSupport Code=1 "(null)"
2026-03-02 15:42:13.477 [Error] [main] [WebViewExternalMessageHandler.swift:477] comissionMatterDevice() > Error Domain=com.apple.MatterSupport Code=1 "(null)"

[bgoncal]

Please open a new issue, you can also DM in discord your logs to be (bgoncal2)