Input\Output error when connecting from macOS to Windows

[milika]

Hi, with newest NoMachine and macOS version, Windows server, macOS client, I’ve been getting Input\Output error, or Broken pipe every couple of minutes. Retry reconnects normally.

Its connected in LAN, no firewall issue anywhere or similar.

I’ll include the logs.

Thanks!!

Attachments:

1. MBP-logs-2026-02-09-19.46.49.zip

[Britgirl]

Hi, can you attach the image that you pasted? Use the attach tool below the text box instead of pasting 😉 Thanks.

[milika]

Sure

Attachments:

1. 

   Screenshot-2026-02-09-194707.png
   

[Britgirl]

Can you send us the logs from the machine you are connecting to? You can extract them using the instructions here: 1.1 Server logs – https://kb.nomachine.com/DT08U00298#1.1. You can attach them here or send them to forum[at]nomachine[dot]com. Please use the title of this topic as the subject of your email. Thanks!

[milika]

done!

[Britgirl]

The logs don’t show evident issues within the software, the server closed cleanly. It could possibly be a network problem, but to make sure we need new logs. Set SessionLogClean 0 in the node.cfg file (/usr/NX/etc/node.cfg), reproduce and send the logs.

[milika]

There is no such folder in /usr
and my company policy stopped me from making it at all 🙂
Any other path?

[milika]

Found it 🙂

[milika]

Logs sent

[Britgirl]

Hi, so we checked the logs and there is no issue in the software, rather a broken connection caused by something in your network:

client:

8512 19344 2026-02-12 14:14:49 607.839 ProxySession/ProxySession: 
ERROR! Connection with the remote peer broken.
Error: Connection with the remote peer broken.
Error: Error is 5, 'Input/output error'.

server:

32294 22031 2026-02-12 14:14:50 060.364 ProxySession/ProxySession: 
ERROR! Connection with the remote peer broken.
Error: Connection with the remote peer broken.
Error: Error is 32, 'Broken pipe'.

[milika]

Well, this is 2 pcs on same LAN, even same switch with fixed ips.
What could cause this?
Something from Mac? Like VPN or firewall?

[Author]

Posts