Hi all,
i have exactly the same problem. Unfortunately I can't downgrade to version 7.3 because my clients have Ubuntu 22.04 Jammy Jellyfish installed.
Would be nice if there would be an update soon to lock my students computers.

@Alefunshow Or for example to view the preview only when I double click in the icon and the user give me the permission for the session.

@correlio Nel manuale c'è riportato tutto il necessario, comunque per potersi connettere deve avere l'indirizzo ip del computer dello studente e inserirlo nel configuratore della macchina master

At the moment this is not possible. We plan to provide a web-based solution with Veyon 5 in 2023.

@rpgmem i leave "veyon-master" blank on installation.

@mmg-carlos Same thing for me, i install from scratch, and nothing works! Using a pc with ASTER multiseat and other for the teacher, and nothing works anymore on Windows 11

@ltsepp
Found the problem.Wrong settings under object attributes
User = sAMAccountNAme
Group = member
Computer display = cn
computer hostname = cn

That worked for me

Unfortunately we do not have packages for Redhat 8 (since CentOS 8 is EOL) but I would recommend building an RPM file manually as described in the README.md file in the sources.

I guess you enabled Multi session mode in the Service configuration page. When enabled, the Veyon Service uninstalls the Interception driver since it's known to cause problems in terminal/remote desktop server environments. If you do not need multi session mode, simply switch back to Local session mode.

Otherwise the Veyon Service has problems with accessing the Interception driver so it tries to reinstall it manually.

Simply enter the password of your user account. If you configured a different (domain?) account for accesing the clients, you can change the password of that user in your AD/LDAP server management UI.

I guess it's either the LDAP bind password or the external VNC server password which is stored in the configuration and likely hasn't been set before. You can simply ignore that warning unless you have actual problems with configuring one of these passwords.

I'm sorry for the problems you had with managing your network objects through the CLI. I guess veyon-cli didn't identify the location(s) properly in which to import the computers. It would be interesting to see the output of

veyon-cli config get BuiltinDirectory/NetworkObjects

before and after the import. May be you can reduce the import to a minimal case with just one entry?

Next I would also recommend to clear all objects before the import.

Have you tried enabling the Query nested user groups (supported by AD only) option in the Advanced LDAP settings tab? When enabled, Veyon uses the LDAP_MATCHING_RULE_IN_CHAIN search filter rule which tells the server to also return indirect members for a certain group. Access control should then allow access also for indirect memberships.

For debugging this, you can change the Veyon log level to Debug (config page General), click on the Test button in the access control page and search for lines containing AccessControlProvider in C:\Windows\Temp\VeyonConfigurator.log – there should be a line with a list of all groups of the user entered in the test dialog.