Demo will not start forever

[DCteacher]

Hi, I need help for using demonstraion function to broadcast my display to student's PC.

I could use demonstration function before, but now it will not broadcasted and stopp at the waiting screen forever like this image.

I can use the monitoring PCs and Lock function and remote control well, so it seems not communication to the each PCs. I feel something setting wrong on master PC for broadcasting video image.

FYI, I tried 2 PCs for master, but both are same sympton.

Would anyone can advice for this situation?

[ClaireSmuts]

@DCteacher We are having the same issue. So far I haven't been able to identify the cause, but it seems to help to demo in a window instead of full screen and to restart the teacher machine if both window & full screen doesn't work.

If anyone knows the cause of this, I would love to hear it. We're currently using 4.7.4.

[DCteacher]

@ClaireSmuts
Thank you for your response! It is good to know same thing happening.

In my case, both sharing with Fullscreen and In Window are same issue.
And I tried to use different PC with fresh installation, but still same issue.
As information, all the PC are Windows 10.

[bacsom]

Same issue here. Windows 10, gigabit network, same switch, latest veyon.

[DCteacher]

@bacsom Thank you for your response!
It is surely happening in ceretain condition. We hope that developping team will take up this issue quickly!

[Carlo]

Hi, what type of authentication do you use?

If it is by key, be sure to have both private and public keys in the teacher's installation.

Hope this helps.

Have a good day.

[bacsom]

@Carlo Thank you for your answer. Yes, we use key files for authentication and the master computer contains both the private and the public keys as well. All other Veyon features work well.

[Carlo]

@bacsom you welcome! I think you already checked the windows firewall, trying to disable it on both Student and Teacher Pcs. The next step I would check from Lan "Network properties" would be to see if both student and teacher PCs are on "Private" (not Public) network . If all of these settings have been checked maybe some traffic is blocked by the school's router/firewall? Have you even been able to use Veyon's Demo in older releases?

[DCteacher]

@Carlo said in Demo will not start forever:

ps.
Have a good day.

Dear Calro
Sorry late for reply.
Thank you for your advice and sovlved the issue!!
I tried some other things and removed public key unintentionally.

[Carlo]

@DCteacher
You are very welcome!
So it was the public key, good to know.
I'm happy you have solved the issue!

Have a good day!
Carlo