![Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/3/5/5/355bedad737214afa24fea26b49443a28860c4e3_2_500x500.jpeg)
Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum
![avrdude: stk500_recv() and avrdude: stk500_getsync() Errors While Uploading - Installation & Troubleshooting - Arduino Forum avrdude: stk500_recv() and avrdude: stk500_getsync() Errors While Uploading - Installation & Troubleshooting - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/6/7/1/671f7d2c1761de7d2d0d00561a5f8a474c164138.jpeg)
avrdude: stk500_recv() and avrdude: stk500_getsync() Errors While Uploading - Installation & Troubleshooting - Arduino Forum
![Arduino Uno avrdude: stk500_recv(): programmer is not responding - Avrdude, stk500, Bootloader issues - Arduino Forum Arduino Uno avrdude: stk500_recv(): programmer is not responding - Avrdude, stk500, Bootloader issues - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/9/e/3/9e359cf1ac4458db264bc2ccd2827e3435b9525e_2_375x500.jpeg)
Arduino Uno avrdude: stk500_recv(): programmer is not responding - Avrdude, stk500, Bootloader issues - Arduino Forum
![Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/0/4/6/0462260fa1e6dd35112590e294f5df86e139620a_2_690x370.png)
Uploading error: Error:avrdude: ser_open(): can't set com-state for "\\.\COM3" - IDE 1.x - Arduino Forum
![Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting](https://preview.redd.it/7040es151l231.jpg?width=5312&format=pjpg&auto=webp&s=161a4c9e5f2e98cf0085bd7b6241b29e96650902)
Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting
![Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting Error (avrdude: stk500_recv(): programmer is not responding) while uploading new Firmware to Ender 3 : r/3Dprinting](https://preview.redd.it/omi43s151l231.jpg?width=2988&format=pjpg&auto=webp&s=c46a10d552ba65cddad128e7e623add744d06931)