Trouble Uploading program

I recently received an Arduino Uno off of RC Groups for a school project. As I am learning to use it I am trying to upload the Blink-Again program. However I keep getting the same error every time I try (Image attached below). I’ve tried a different cable and checked the firewall settings. I just can’t get it to work so any help would be appreciated


Remove everything connected to the arduino and try again. Read How to use this forum

Did you read The Troubleshooting Guide ?

try Loop Back Test and post your results.