Error 429 when using davx5 with task management app "Tasks" (task.org)

[knutlegrand]

Problem scope

• I'm sure that this is a DAVx⁵ problem.

App version

• I'm using the latest available DAVx⁵ version.

Android version and device/firmware type

Android 16 (Pixel 7A)/ Android

Steps to reproduce

1. Within Nextcloud, create a calendar with tasks
2. Add some tasks & events
3. Using Davx5, define the account to connect to (the one defined in Nextcloud)
4. Download and install “Tasks” app (Tasks.org by Alex Baker) on Android side
5. Download and install “jtx Board” app (TechBee) on Android side
6. Select “Tasks” app in DavX5 settings (Settings → Integration → Task management app), Synchronize => Error 429
7. Select “jtx Board” in DavX5 settings, synchronize => no more error

nextcloud_Tasks.log

nextcloud_JTX.log

debug-info.txt

Actual result

Using Tasks as tasks management app -> get error 429
Using jtx Board as tasks management app -> no error

Expected result

No response

Further info

No response

[rfc2822]

429 Too Many Requests indicates that some rate limit was exceeded. I suspect that this is not related to jtx Board or tasks.org, but just about too many requests (syncs) within short time. It depends on how your server is configured. I don't think that this is a DAVx5 problem. If there's any indication that DAVx5 could do something else to avoid this error, please let us know.

[rfc2822]

set 'ratelimit.protection.enabled' to false in Nextcloud settings (in /nextcloud/config/config.php), so no rate limit coming from nextcloud

As I understand it, when there's no rate limit, the server should never answer with 429, regardless of what DAVx5 does.

I suspect there's another rate limit that's not from Nextcloud, but maybe from your server / hosting provider / HTTP firewall / load balancer / reverse proxy?

---

However maybe uploading the task with tasks / opentasks causes an endless loop or something … can you

1. enable verbose logs
2. upload a task with tasks.org so that it causes 429
3. send the verbose logs to https://www.davx5.com/support?

[knutlegrand]

Have tried with a brand new calendar (defined in Nextcloud) and set Tasks in DAVx5
Without any task -> it works
Transfer tasks from my previous calendar to this new one (one by one) -> it works after having transfered ± 50 tasks (sync without any error)
Errors are coming, starting from ± 250 tasks transferred. The more the task number is increasing, the more I get the error 429 (it works, then I get the error, then it works again, ...). At the end (± 550 tasks, including confirmed tasks), it never works anymore.
-> still investigating, I'll let you know what happens
Fyi, I did upload a large ics file including all tasks to my previous calendar

[Moini]

@knutlegrand Have you found any solution for this? On my secondary mobile device, I have not been able to update calendar entries since before 2026, and slowly but surely, my primary device is getting older, so I'll need to switch - but can't, while calendar syncing isn't working.

[knutlegrand]

@Moini On my side, this is solved.
I'm using Cloudflare (free plan) and some security rule filters requests. Using the free plan, this rule cannot be deactivated, meaning it's almost hidden from the user. It took quite a long time to identify this.
But I found that I could create a security rule to allow requests to/from my devices. This has a higher priority than the default one, meaning all my requests pass through and therefore no more errors 429 occur

[Moini]

@knutlegrand Thanks! I solved it now, too, but the solution was different. One of our devices was using an incorrect password, and that blocked all the other devices.