Owncloud client vs nextcloud

My situation is that I need to sync files to two different servers. One is an ownCloud 10 server under my control, the other is out of my control and used be be owncloud, too, but was recently migrated to nextcloud 13.

Now my Windows desktop client is issuing warnings that the connection to the Nextcloud server is not supported and to proceed at my own risk (which does not sound very reassuring for my files).

My question: Will this be the case in the future, too, or are there plans to align the clients to support both versions?

I would rather not have two clients running at the same time in order to support two different servers but I also don’t want to risk loss of data due to incompatibilities.

Or are there other clients that officially support owncloud and nextcloud?


But maybe you’ll have to. I assume that the development of nextcloud will continue to deviate. Sad story!

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So far everything is compatible, there is no plan to deviate on purpose.
It’s just that ownCloud devs (obviously) don’t test with Nextcloud so we show a warning


I would not expect one team to do extra development to support the other product (although it might be smart, as the one with the wider compatibility might win), but maybe it would be smart to test with the other product to let users know when things no longer work? Any failure here might result in data loss, so it’s somewhat critical to understand the risk.

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Daily builds are available as well as pre-release alpha, beta and rc versions. If you test with NC server and provide feedback, your results could be linked in the release notes…

Here you can find some tests you could perform:


OK, thanks. I need to think about that. I am not really into software development/testing so it’s not yet clear to me how much time this would take…

I’d recommend using a VM with snapshots, so you can always go back to a clean state. Let us know if you more questions…