Hi Berend,
Wondered if you ever found a resolution to this. I am doing a first time install of Horizon and running into the same thing.
I've reinstalled the connector and service about a dozen times now to make sure I'm not doing anything wrong. I've also tried multiple windows shares from different servers and versions. I've also tried opening up permissions on the shares to allow everyone full control but still having issues.
Whenever I try to enable Windows apps and fill in the information, 1 of 2 things happen:
1. When I click Save, the screen just seems like it refreshes and the "enable windows apps" checkbox is unchecked.
2. I get the message you are probably getting: "Problem configuring Windows Apps: RepoUpdateRegistry() failed with error: ERROR_NETNAME_DELETED"
Hopefully you or someone in the community has come across a fix for this. Any help is appreciated.
Thanks
Steve