I understand that this is a frequent problem but Googling hasn’t led to a solution yet in my case.

Assembly went well as did uploading the latest firmware to the board with Arduino (1.8.1). The CP210x driver automatically installed itself upon USB insertion, on Com 3 at 9600 according to Device Manager.

After closing the Arduino app the next step is said to be opening Pronterface but it hangs at "connecting … ", although AFAIK the correct port and baud rate have been entered correctly, including in Configuration.h through the Arduino console which was the solution in one case.

May I ask what other issues may be preventing Pronterface from establishing a connection?

I’ve understood that getting my first printer to work well will be complicated and I look forward to the challenges, but I wasn’t prepared for getting stuck with instructions which aren’t going ahead as explained in the otherwise very good Anycubic manual.

Communications with the staff at Anycubic have unfortunately not been helpful in resolving the issue.

Thank you!

Do you have another serial device that you could connect to the COM port? You can also test with the serial monitor of the Arduino IDE to confirm comms with the AnyCubic