@Andrew
Danke.

@olivierlambert
Hello OliverLambert,
you were right, there was a bug in the version.
The backup works with the eddd6.
Where can I actually see what the latest version is at the moment?

@HH
I'm not that good in English, what information do you need ?

@HH

@HH
xo-server 5.89.0

@HH
Yes

Hello everybody,
I've used Xen Orchestra with XCP-ng 8.2LTS before. Backup worked without any problems.
I tried it with XENServer 7.1LTS Free and got the error message: "app.createUserConnection is not a function"
Does somebody has any idea ? Do you have to activate something on the old XEN server?