Sync Error

This issue respects the following points:

• I have read the FAQ
• I have searched for existing issues
• The issue affects the Notes Android app, neither the Notes server app nor the Nextcloud Android app.

Describe the bug

1 Open the app
2 Error message appears: "Sync failed"
3 notes which have been edited since this sync problem appeared, are not synched with nextcloud - the blue "snyc arrows" remain on these notes in the notes list.

Expected behavior

App opens and notes sync with Nextcloud

Notes Android version

4.4.2

Notes server version

4.12.3

Nextcloud Android version

3.33.0

Nextcloud version

31.0.8 (NC Hub 10)

Device

Google Pixel 8a

Android Version

16

App Store

• Google Play Store
• F-Droid
• Huawei App Gallery

Stacktrace

App Version: 4.4.2
App Version Code: 40040290
App Flavor: play

Files App Version Code: 30330090 (PROD)

---

OS Version: 6.1.148-android14-11-g131cabf4b449(2025090800)
OS API Level: 36
Device: akita
Manufacturer: Google
Model (and Product): Pixel 8a (akita)

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java.lang.Exception: com.nextcloud.android.sso.exceptions.TokenMismatchException: Der Authentifizierungs-Token stimmt nicht überein oder dem Paketnamen fehlt die Berechtigung für diese Aktion
	at it.niedermann.owncloud.notes.persistence.NotesServerSyncTask.pushLocalChanges(NotesServerSyncTask.java:151)
	at it.niedermann.owncloud.notes.persistence.NotesServerSyncTask.run(NotesServerSyncTask.java:100)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:524)
	at java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:651)
	at java.lang.Thread.run(Thread.java:1119)


java.lang.Exception: com.nextcloud.android.sso.exceptions.TokenMismatchException: Der Authentifizierungs-Token stimmt nicht überein oder dem Paketnamen fehlt die Berechtigung für diese Aktion
	at it.niedermann.owncloud.notes.persistence.NotesServerSyncTask.pushLocalChanges(NotesServerSyncTask.java:164)
	at it.niedermann.owncloud.notes.persistence.NotesServerSyncTask.run(NotesServerSyncTask.java:100)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:524)
	at java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:651)
	at java.lang.Thread.run(Thread.java:1119)


java.lang.Exception: com.nextcloud.android.sso.exceptions.TokenMismatchException: Der Authentifizierungs-Token stimmt nicht überein oder dem Paketnamen fehlt die Berechtigung für diese Aktion
	at it.niedermann.owncloud.notes.persistence.NotesServerSyncTask.pushLocalChanges(NotesServerSyncTask.java:164)
	at it.niedermann.owncloud.notes.persistence.NotesServerSyncTask.run(NotesServerSyncTask.java:100)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:524)
	at java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:651)
	at java.lang.Thread.run(Thread.java:1119)


java.lang.RuntimeException: com.nextcloud.android.sso.exceptions.TokenMismatchException: Der Authentifizierungs-Token stimmt nicht überein oder dem Paketnamen fehlt die Berechtigung für diese Aktion
	at io.reactivex.internal.util.ExceptionHelper.wrapOrThrow(ExceptionHelper.java:46)
	at io.reactivex.internal.observers.BlockingMultiObserver.blockingGet(BlockingMultiObserver.java:93)
	at io.reactivex.Maybe.blockingGet(Maybe.java:2321)
	at io.reactivex.Observable.blockingSingle(Observable.java:5381)
	at it.niedermann.owncloud.notes.persistence.NotesServerSyncTask.pullRemoteChanges(NotesServerSyncTask.java:225)
	at it.niedermann.owncloud.notes.persistence.NotesServerSyncTask.run(NotesServerSyncTask.java:102)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:524)
	at java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:651)
	at java.lang.Thread.run(Thread.java:1119)
Caused by: com.nextcloud.android.sso.exceptions.TokenMismatchException: Der Authentifizierungs-Token stimmt nicht überein oder dem Paketnamen fehlt die Berechtigung für diese Aktion
	at com.nextcloud.android.sso.api.AidlNetworkRequest.performNetworkRequestV2(AidlNetworkRequest.java:179)
	at com.nextcloud.android.sso.api.NextcloudAPI.performNetworkRequestV2(NextcloudAPI.java:159)
	at com.nextcloud.android.sso.api.NextcloudAPI.lambda$performRequestObservableV2$0(NextcloudAPI.java:97)
	at com.nextcloud.android.sso.api.NextcloudAPI.$r8$lambda$af7W9mq2B0ZrhVJwZd-ibFp8T3Y(Unknown Source:0)
	at com.nextcloud.android.sso.api.NextcloudAPI$$ExternalSyntheticLambda1.subscribe(D8$$SyntheticClass:0)
	at io.reactivex.internal.operators.observable.ObservableFromPublisher.subscribeActual(ObservableFromPublisher.java:31)
	at io.reactivex.Observable.subscribe(Observable.java:12284)
	at io.reactivex.internal.operators.observable.ObservableSingleMaybe.subscribeActual(ObservableSingleMaybe.java:31)
	at io.reactivex.Maybe.subscribe(Maybe.java:4290)
	at io.reactivex.Maybe.blockingGet(Maybe.java:2320)
	... 8 more

Start in NotesServerSyncTask.java at pushLocalChanges lines 151 and 164, then inspect pullRemoteChanges around line 225 and the TokenMismatchException from the Nextcloud SSO request. Reproduce the failed sync with the listed app and server versions, determine why the token request is rejected, and verify that local notes sync successfully without leaving the sync arrows.