Code upload error in Arduino Nano

[sd_swastik]

Hello everyone, I am facing an unusual problem in uploading a basic code to Arduino Nano. Every time I try to upload the code, the following error pops up :

avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "C:\Users\SWASTIK DEY\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf"
Using Port : COM7
Using Programmer : arduino
Overriding Baud Rate : 57600
avrdude: ser_open(): can't set com-state for "\.\COM7"
avrdude done. Thank you.
Failed uploading: uploading error: exit status 1

My arduino ide software is version 2.3.6 . And the serial port 7 is not used by any other application/device.
Can someone please help me ?

[van_der_decken]

See:

Avrdude: ser_open(): can't set com-state for "\\.\COM5" Failed uploading: uploading error: exit status 1

Hi @teaoncup There were some previous reports of this "can't set com-state for ..." error occurring specifically when using boards that have the CH340 USB chip. It seems that a driver upgrade included in a recent Windows update is the cause of this problem. The affected users have found that uninstalling and reinstalling the CH340 device fixed the problem. I'll share the instructions you can follow to do that: Close Arduino IDE if it is running. Connect the Arduino board to your computer wi…