I had problems configuring my 'Box' remote render system thanks to loss of the convenience of 'workgroups'. After much fumbling around, I stumbled upon the menu which allowed me to authorise file access between two systems. The prior error messages seemed to want something else, but were just ambiguously phrased...

Um, any chance we could have a multi-version sub-forum for network rendering ??

I would not have considered network rendering, except I began pricing upgraded to my twin graphics cards. To my horror, I realised it would be cheaper, faster and more future-resistant to build an entire, dedicated 'Box'  than significantly upgrade either GPU card...

One 'gotcha': to make 'Box' render using all its Rhyzen 7 cores, I had to change my parameters from those preferred by those twin GPUs. So 64 vol-bounces and buckets, rather than their 1024...