I tried to upgrade graphics driver, didnt help. After upgrading Veyon to 4.2 Alpha (4.1.91), the problem is solved and everything works fine. Thank you.

@tobydox Thanks for your help Tobydox, i have tried in cmd under windows and i always get an error. If i try with the graphic interface authentification "@" in my password this work perfectly.

In the Veyon Configuration (Master -> Behaviour) you can enable the option "Enforce selected mode for client computers" which should automatically re-lock computers once logged on again.

Hi, yes I have changed the network object directory backend to "LDAP" ! Best regards

Hello and thanks Recursive search is active, but it is also needed because of the nesting of user groups and room groups. This is related to bugtracker https://github.com/veyon/veyon/issues/465 . The renaming is a working workaround for me. Pay attention to the alphabetical order of nested items in the LDAP tree. -workstations -- Workdepartment1 ---- Room01 ---- Room02 -- Workdepartment2 ---- Room03 ---- Room04 That's how it works for at the moment.

Which installation directory did you use for Veyon? Maybe some special characters with accents etc.? Can you try to set the log level in Veyon Configurator to "Debug" and look for VeyonService.log in C:\Windows\Temp?

In order to connect to a client TCP port 11100 (Veyon Server) has to be accessible. 11200 is just the port of the internal VNC server which is used by Veyon Server internally only. Are you using a dedicated firewall or internet security software?

Hello, I suggest to increase the log level to "Debug" in Configurator, clearing log files and take a look at the log files on the affected clients (C:\Windows\Temp\VeyonServer.log) after opening Veyon Master on the teacher computer. You might find further information in the log files on what's going on and what causes the failure.

Unfortunately Veyon 4.2 is already delayed and we did not manage to get this implemented We still try to get this done in Veyon 5.

Did you configure Veyon to use IP addresses or hostnames? When using hostnames make sure your DNS setup is working properly, i.e. names can be resolved to IP addresses with regular DNS and not WINS/NETBIOS only.

Are you using logon authentication or key file authentication? If logon authentication, can you logon into Veyon Master application on a Windows 10 machine?

As Veyon simply launches the default browser so you'll have to configure your system to use Chrome as the default browser.

Hello @herge you can achieve the desired behaviour by setting up access control rules and deploy the updated configuration to all clients. You'll have to define rules for explicitely granting access under certain conditions, i.e. "logged on user is member of group <students>".

Are you linking to Active Directory via LDAP or using the Authentication Keys?

For anyone who is needing to do this I figured it out: First enable google play Go to Google Play and install Crossover Have the windows 32bit installer ready Type random letters until it allows the install of an unlisted program Select Veyon and go to the installer The only setting you need to change is the directory to your documents folder.

On the ones that are not connecting have you verified that the Veyron service is running?

Not sure it is the same problem as the one I reported, but try to use IP address instead of computer name. I was able to fix all my connexion problems, even if I do not like depending on fixed ip addesses Nicolas