I think I’ve managed to isolate the issue.
There was info out there regarding OpenVPN and this particular error. The fix appears to be adding the following lines to the OpenVPN configuration file:
Unfortunately there doesn’t appear to be a configuration file within Zeroshell. Is there a way to implement this change with the command line parameter on the VPN itself?
EDIT: Found my answer. Added “–mssfix 1400” to the command line parameter for this particular VPN interface. I’ll test this today and see if it fixes it. If not, I’ll add in the fragment command as well and hope that does it. Stay tuned.