OpenCloud Desktop Client under Linux not working

[techsupportkoeln]

Hello,
I am trying to get the Open Cloud Client running on Ubuntu 26. Installing AppImageLauncher is no problem. I can also download the Open Cloud Client version and add it to AppImageLauncher, but the client won't launch. Is this an issue with Ubuntu 26?

[yudin-s]

On Ubuntu 26, the first useful check is whether the AppImage itself prints a loader error when started directly from a terminal. AppImageLauncher can hide the real failure, so run the file once outside the launcher and capture the output.

For example:

chmod +x ./OpenCloud*.AppImage
./OpenCloud*.AppImage

On newer Ubuntu releases, one common AppImage failure is missing FUSE 2 support. If the terminal output mentions libfuse.so.2, dlopen, or FUSE, install the compatibility package and try again:

sudo apt update
sudo apt install libfuse2t64

If that package name is not available on your Ubuntu build, check for libfuse2 instead:

apt search '^libfuse2'

If it still does not start, paste the terminal error from running the AppImage directly, plus:

lsb_release -a
uname -m

That should separate a missing Ubuntu/AppImage runtime dependency from an OpenCloud client crash.