One angle I did not consider is the android variant and various mobile OS . I am on stock Android and use Google Play Store and use a fairly old motorola

I'm on very close to "stock" Android too. GrapheneOS isn't a big deviation.

Don't think this has anything to do with Android though. Something with authentication.

Trying to add a new note or edit an existing one results in a failure. "Synchronization failed" message with a "More" link which opens a window with Java exception details. The exception is "Runtime Exception" and the stacktrace talks about "NotesServerSyncTask.pushLocalChanges()". So, local changes cannot be pushed to the cloud is how I interpret this.

I search for that string and got quite some sync issues - https://github.com/search?q=repo%3Anextcloud%2Fnotes-android+pushLocalChanges&type=issues
. Most are unsolved it seems. People talk about things randomly working as well - https://github.com/nextcloud/notes-android/issues/2569#issuecomment-2655398231

My notes installation continues to work with no problems! One angle I did not consider is the android variant and various mobile OS . I am on stock Android and use Google Play Store and use a fairly old motorola

Furthermore, a separate REST API allows for an easy integration into third-party apps (currently, there are notes apps for Android, iOS and the console which allow convenient access to your Nextcloud notes).

Then looked at NextCloud Notes app documentation on GitHub. Specifically looked at "Authentication" section here: https://github.com/nextcloud/notes/blob/main/docs/api/README.md#authentication .

If I'm not blind and not crazy it looks like the API does basic authentication and does not support any token based authentication. If that is correct - then W.T.F.!?!

But then I don't understand why Notes integrates with NC client app. The whole point there would be for NC client app to deal with authentication and Notes app just using NC app as comms channel.

0. Remove cache and data for all apps. Optionally - reinstall apps (tried many times, didn't help).
1. Open NextCloud app on my phone.
2. Connect and authenticate with OIDC. This opens my browser, I login with Cloudron.
   2.1. Optionally authenticate with NC app password / QR code it generates.
3. NC client app gets the files, I can sync both ways.
4. Open Notes and select "Choose Account". In a popup select the one from NextCloud app.
5. Notes "downloads" (or uses NC client to obtain) all notes.
6. Trying to add a new note or edit an existing one results in a failure. "Synchronization failed" message with a "More" link which opens a window with Java exception details. The exception is "Runtime Exception" and the stacktrace talks about "NotesServerSyncTask.pushLocalChanges()". So, local changes cannot be pushed to the cloud is how I interpret this.

@jdaviescoates said in Nextcloud Notes no longer synchronizes:

Opened Notes app on my phone and chose the Nextcloud account. So far, it's randomly working fine again...

Still working.

Also just logged into Talk again (although strangely that forced me to login to Cloudron again, but whatever), and that is also currently working again.

Stopped working, but added account again (and was forced to fully login again), working again

Deck didn't work (will add screenshot once synced)

https://paste.uniteddiversity.coop/?01186060235e08cf#39NWDP6gbV2E34wLCGYGwHqLkWACQCzyEy528msuqEod

Ah, this was actually because it wasn't enabled on the server! (I think it got auto disabled at some point because it wasn't compatible with the Nextcloud version).

Indeed, something still isn't quite right because despite the fact this is a Featured app, when I look at it within Nextcloud it says it's an untested app and that Server version 30 or lower is required. (and has a button to update to the version I'm already on ) :

Whereas in the Nextcloud app store it says Highest Nextcloud version Nextcloud 31

Bloody Nextcloud apps!

But, whatever, it's actually working so nevermind (and I've just reported this discrepancy upstream).

Just to double check. you are unable to create app passwords as OIDC user correct (and not admin) ?

Ah, yes, good point. So not like for like comparison with the demo

I'm about to try again...

So I just:

Clear cache and data for all the Nextcloud apps on my phone (Nextcloud, Talk, Notes, Deck)

Logged into Nextcloud again using OpenID

Opened Notes app on my phone and chose the Nextcloud account. So far, it's randomly working fine again...

Also just logged into Talk again (although strangely that forced me to login to Cloudron again, but whatever), and that is also currently working again.

Deck didn't work (will add screenshot once synced)

https://paste.uniteddiversity.coop/?01186060235e08cf#39NWDP6gbV2E34wLCGYGwHqLkWACQCzyEy528msuqEod

But I figured I'd try to clean up the old ones as part of troubleshooting and working out what's going on.

But I just tested, and deleting app passwords works on this Nextcloud on the demo https://te.demo.cloudron.io/settings/user/security

So perhaps the fact that I can't delete app passwords on mine is somehow related to the syncing not working properly?

And actually, right now I can't create app passwords either, similar to the temporary issue @bazinga was having previously.

Made changes in the notes android app. They are synced just fine

I can also get to this stage, and then without any further changes it just stops working. I'm about to try again...

I figured I'd try to create a clean slate by deleting all older app passwords... but that didn't work. If I try to delete any old app passwords I just get:

It just gives a 400 Bad Request

and generates these errors:

• Installed notes app on nextcloud
• Made some notes on the web ui
• Installed notes app and selected my account. It did not sync
• I restarted my notes android app. The notes appeared
• Made changes in the notes android app. They are synced just fine

Since some have reported that initial sync with notes works, but eventually fails, maybe some token expiration is hit. Though it is unclear why nextcloud would suddenly not accept its own internal app passwords...

It's also not just Notes, it's Talk too afaict

I don't use Talk often, and have no way to test it, unfortunately. But I doubt this issue has nothing to do with whatever happened during OIDC integration and NC updates.

@nebulon As far as reporting upstream. I presume you're talking about you guys doing that as you have all the knowledge about how NC is integrated, what is done to it, etc? And I presume your staff should be testing and looking into issues like this?

sounds very much like a notes or nextcloud bug

Worked just fine before OIDC upgrade with Cloudron.

Considering I couldn't find any reports of similar nature unrelated to Cloudron's hosting of NextCloud the chances of it being just NC-Notes issue are even lower. Not impossible, of course, but I'd expect people report on issues like this. The issues reported over the past 6-12 months are all related to tokens or similar.

What mobile OS are you using?

I've got GrapheneOS on a Pixel Pro. I've messed around with various per-app security settings that GrapheneOS provides, but none of that helped.

Somewhat bizarrely, whilst the first quick tests I did this morning both worked fine, now they've both stopped working again.

For me - it works for the initial sync, after that doesn't work - eg. Notes on my phone gets all 150+ notes entries/files, seems to be good. Go and edit one or create a new one and that starts throwing errors and never works.

Re-installing apps, clearing caches/storage/etc. doesn't help.

Using app passwords or using OIDC for NextCloud client (main app) auth doesn't make a difference.