After years of using corona render and DRserver, still sometimes it works sometimes not…
Now its not working 
I am really trying to understand how to set it up properly to work eveytime. Drsever is on second pc on network. I gave permsionss on firewall and tried a lot of different stuff. but still its not working. after restrart sometimes it works, sometimes not. also depends on the files, sometimes eveything works fine, sometime not. PCs are connected with switch, then to a router. I am also using synology for all data, also connected to the same switch. Any ideas how to solve this?
I moved your thread to the 3ds Max section.
Please collect all the basic information (Corona version, Max version, DR logs,…) as explained in this guide https://support.chaos.com/hc/en-us/articles/4649117083409-How-to-report-issues-3ds-Max
Then contact us with that information at https://support.chaos.com/hc/en-us/requests/new