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Uploaded by starting the IDE the second way (File -> Open) : Windows 10 64Bit, Arduino 1.6.10 upload issue. · Issue #5173 · arduino/Arduino · GitHub
Thank you.
Board Model: Arduino UNO R3
Sketch:
void setup() {
pinMode(13, OUTPUT);
}
void loop() {
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(1000);
}