Veyon Community Forum

We have the same problem, sometimes the Veyon Service into clients PC doesn't start. To verify this, logon on unreachable client as administrator, run Veyon Configurator and try to start service manually. At moment we haven't found the cause.

End the problem! (before update windows not problem. master can connect to all client. after update windows master can't connect to some client.) For fix this. we "create key pair" and import key to all client. and General>Authentication> Select "Key file authentication" > Apply [image: 1747817477239-57081873-e29f-4685-88f3-68bdd09dfcbf-image.png]

Hi, i tried with Wireshark but no magic packet were made by veyon. I can magic packets from my computer when I use wol.exe for example, but nothing with veyon.

Yes, it is possible to take screenshots using Veyon-cli. Veyon provides a command-line interface (CLI) that allows for various actions, including capturing screenshots, on remote computers. You can use the veyon-cli tool to send a screenshot command to a specific computer or to all connected computers.

Hi, thank you for your answer, i submit an issue here : github _ veyon _ veyon / issues / 1033 (sorry i can't post a link)

Hi! You can describe how you make this config? You set variable? And if yes, how to?

Hello, This is a Windows login configuration on non-Veyon PCs to modify. There should be no information from the previous user. Interactive login must be enabled : gpedit.msc Expand: Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options. On the right, locate and double-click the "Interactive logon: Do not display last user name" policy.

@Bilgediver said in Performance considerations for network: As far as I can tell Veyon uses self-hosted VNC. As far as I know VNC is between client and server, there is no inbetween. The only way that would work (in my head) would be to set it up on a server, then you use your instructor computer to remote into the server to view everything. I just tested it on our network and you can use Veyon on your Instructor computer to remote into the Server Installation of Veyon, and use the Server Veyon to view all of the other computers. Thank you so much for this input!! Although I don't really have a specific deadline for getting this setup, ideally it'll be setup before summer break kicks in, because we have summer day camps that will use the computer lab much more heavily than during the school year. So I'm gonna definitely slot out some time here within the next month or so to get this all fully figured out. Again, I appreciate this! Helps me greatly in getting a better idea of if Veyon may be a high potential solution for our needs. Thank you!

You can: "C:\Program Files\Veyon\veyon-cli.exe" feature start <destination IP> PowerDownNow

@tobydox how would that even work? We have our guacamole server set up for RDP sessions, and for simplicity's sake we have every single laptop/VM set up with the exact same RDP credentials, how would we pass through the Guacamole login name or student name in guacamole as an environment variable?

Another temporary workaround is to use the custom computer arrangement to create a "gap" in the middle of the 4 computers we have selected for that individual display TV, that way only 1 instance of Veyon Master needs to be open. This looks like its the more likely temporary solution we'll use. (and for the demonstration, we'll often have the students name on the computer number in notepad in the middle). [image: 1743704158234-d8699514-7bfc-4c51-887e-b7cb90a6b4ee-image.png]

@FrEmaVeyon You can "Start Application" using %USERPROFILE% environment variable. For this You need to start it using cmd: cmd /c start "" "%USERPROFILE%\program.exe" This will work