Octoprint not connecting to printer anymore

What is the problem?

Octoprint not connecting to printer anymore

What did you already try to solve it?

Reboot Octoprint and Printer
Change Budrate and Serial port
Change usb cable

Have you tried running in safe mode?


Did running in safe mode solve the problem?


Systeminfo Bundle

You can download this in OctoPrint's System Information dialog ... no bundle, no support!)

octoprint-systeminfo-20211029151048.zip (27.7 KB)

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

OctoPrint Version 1.7.0, OctoPi Version 0.18.0, Creality Ender 3 v2, Firmvare Version 1.0.2, Chrome, Windows 10

Please try disabling "Request low latency mode the serial port" under Settings > Serial Connection > General > Connection and see if that solves the issue. Please report back on your results.


Thank you so much for the solution

I've been seeing this a lot the last couple days as well. I do not have the "low latency" setting turned on. Any other ideas?

Hello @Derek_Antrican !

You may have a look on these:


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