Every now and then I get the "zlibinstream:exceeded bytesIn" error when trying to connect to my server through my vnc. Why do I get this error and how can I solve it when I get it - without restarting my server ?
Came across the same issue a couple of times. I am not aware of permanent fix, but for a quick one just change colour to Fullcolour.
For me in VNC Viewer it was in options/Expert/FullColour to true.