Chaos Corona for 3ds Max > [Max] I need help!

DR Render Problem - Failed to send render results back to master.

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rohe:
hello, Corona DR Render is giving this error. What would be the reason?

2022-02-22 19:53:51   Failed to send render results back to master.
2022-02-22 19:54:35   Started EXR dump (2.233 M bytes, filename: C:/Users/User09/AppData/Local/CoronaRenderer/DrData/dump846.exr)

m.krajewski@dotdesignstud:
I have the same problem.

3ds max 2023, corona 8, win 10, ryzen 5950x

Funny thing is that there are two workstations with ALL the part the same (down to plugged usb devices and monitors) with the same software, everything updated the same way.
One can render just fine, and the other cant send results, or can't connect at all.
Another funny thing is that it is sometimes the first one, sometiems the second one, sometimes both can connect.
Restarting DRServer doesn't help, restarting the slave machine doesn't help, turning off the firewall or antivirus doesn't work.

We did not have this problem with max 2021 + corona 7.
 
Mike

maru:
DR issues are often hard to diagnose. It may be related to your network setup. Can you explain how your computers are connected? Are they both plugged into a switch, or maybe connected directly with a cable, or maybe something else?

We can suggest some basic troubleshooting but it would be best to contact our support team here: https://support.chaos.com/hc/en-us/requests/new

m.krajewski@dotdesignstud:
Router connects to the switch. rendering master is connected directly to the router. render slaves are connected to the switch.
We had 0 problems likt this for a year of using this setup. Now in corona 8 we have this issue.
tested on max 2021 and 2023

maru:
started a support ticket - #44743

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