Error upload sketch Arduino UNO Versi 1.8.3

Arduino: 1.8.3 (Windows 8.1), Board: "Arduino/Genuino Uno"

Sketch uses 3536 bytes (10%) of program storage space. Maximum is 32256 bytes.
Global variables use 262 bytes (12%) of dynamic memory, leaving 1786 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x45
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xfc
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x45
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x3c
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x11
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xfc
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x45
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x7c
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x11
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x1c
An error occurred while uploading the sketch

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

I've this problem.
Give me a solution please, thank's.

Did you enable the verbose output?

Try disconnecting the UNO from your Windows machine, reinstall the driver, connect it again and try the upload once again.

pylon:
Did you enable the verbose output?

Try disconnecting the UNO from your Windows machine, reinstall the driver, connect it again and try the upload once again.

Thanks, helpfull.
I've new problem, i try to automatic wifi configuration ESP8266 like this :

#define SSID "KOSAN 8"
#define PASS "458italy"
//#define Baud_Rate 115200
#define Delay_Time 5000

void setup() {
  Serial.begin(Baud_Rate);//inisialisasi serial 
  Serial.println("AT");
 
  delay(2000);//menunggu 5 detik bisa ubah biar lebih cepat
 
  //sambungkan ke wifi
  Serial.println("AT+CWMODE=1");//mode wifi client
  delay(2000);//menunggu dengan interval 2 detik
 
  String cmd = "AT+CWJAP=\"";//at command konek ke wifi router
  cmd += SSID;//SSID diisi nama wifi
  cmd += "\",\"";
  cmd += PASS;//PASS diisi password wifi
  cmd += "\"";//simpelnya ya gini AT+CWJAP="SSID","PASS";
 
  Serial.println(cmd);//kirim at command ke esp8266
  delay(5000);//tunggu sampe 5 detik
 
  if(Serial.find("OK")){//respon dari esp8266 
    Serial.println("WORK");
  }else{
    Serial.println("FAILED");
  }
  //end sambungan ke wifi
}

void loop() {
  // put your main code here, to run repeatedly:

}

but, the result failed , can u give me solution?

can u give me solution?

No, this is an Arduino forum. You might have more luck on an ESP8266 forum.