Error compiling for board NodeMCU 0.9 (ESP-12 Module. Being used by another process

[TeckPete]

Error compiling for board NodeMCU 0.9 (ESP-12 Module
open sketch\Blink.ino.cpp: The process cannot access the file because it is being used by another process.

Basic Infos

Hardware

Hardware: Any ESP Board. ESP-01, NodeMCU 0.9 (ESP-12 module)

Description

Every time I try to verify or upload a sketch I get this error it does matter the sketch I use even a simple one. I have tried to just verify a sketch without the board plugged in and same thing. I have tried uninstalling Arduino removed the esp8266 from the board manager tried a different url link for the boards manager. I can get to work on other computers

THIS IS THE ERROR ON THE BOTTOM OF THE SCREEN.
open sketch\Blink.ino.cpp: The process cannot access the file because it is being used by another process.
Error compiling for board NodeMCU 0.9 (ESP-12 Module).

Settings in IDE

Module: Generic ESP8266 Module
Flash Size: ?4MB/1MB?
CPU Frequency: ?80Mhz?
Flash Mode: ?qio?
Flash Frequency: ?40Mhz?
Upload Using: ?OTA / SERIAL?
Reset Method: ?ck / nodemcu?

Sketch

/*
ESP8266 Blink by Simon Peter
Blink the blue LED on the ESP-01 module
This example code is in the public domain

The blue LED on the ESP-01 module is connected to GPIO1
(which is also the TXD pin; so we cannot use Serial.print() at the same time)

Note that this sketch uses LED_BUILTIN to find the pin with the internal LED
*/

void setup() {
pinMode(LED_BUILTIN, OUTPUT); // Initialize the LED_BUILTIN pin as an output
}

// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, LOW); // Turn the LED on (Note that LOW is the voltage level
// but actually the LED is on; this is because
// it is active low on the ESP-01)
delay(1000); // Wait for a second
digitalWrite(LED_BUILTIN, HIGH); // Turn the LED off by making the voltage HIGH
delay(2000); // Wait for two seconds (to demonstrate the active low LED)

#include <Arduino.h>

void setup() {

}

void loop() {

}

### Debug Messages

Looking for library 'user32'
Adding paths from jna.library.path: null
Trying user32.dll
Found library 'user32' at user32.dll
Looking for library 'shell32'
Adding paths from jna.library.path: null
Trying shell32.dll
Found library 'shell32' at shell32.dll
Looking for library 'Ole32'
Adding paths from jna.library.path: null
Trying Ole32.dll
Found library 'Ole32' at Ole32.dll
Loading configuration...
Initializing packages...
Preparing boards...
Starting...
open sketch\Blink.ino.cpp: The process cannot access the file because it is being used by another process.
Error compiling for board NodeMCU 0.9 (ESP-12 Module).

***THIS IS THE ERROR THAT I'M GETTING ON THE BOTTOM OF THE SCREEN***

open sketch\Blink.ino.cpp: The process cannot access the file because it is being used by another process.
Error compiling for board NodeMCU 0.9 (ESP-12 Module)

[lrmoreno007]

What is your operating system?
Have you rebooted the PC?
Do you have any antivirus that may be causing this?

Regards

[TeckPete]

Windows 10 and yes I have restarted several time and yes I have Mcafee livesafe that came with the computer.

[tonton81]

this is a file permission issue

[tonton81]

run with admin rights and fix permissions in ur IDE folder

[larryk240]

I have the same problem using a NodeMCU 1.0 (ESP-12E Module)
Arduino IDE 1.8.5 on Windows 10

Error compiling.....................
open sketch\Blink.ino.cpp: The process cannot access the file because it is being used by another process.
Error compiling for board NodeMCU 1.0 (ESP-12E Module).
This must be a Win 10 update issue, because I wrote to this module several weeks ago. Now it doesn't work.
I can write the Blink ESP8266 program to the module with my Win7 machine using Arduino 1.6.12
Any suggestions ??

[TeckPete]

So it looks like the virus software that came on my computer Macfee was blocking it so I removed it and it seems to be working fine. Thanks Irmoreno007 for the suggestion.

[larryk240]

Yep, McAfee was the issue with my system also. Temporarily disabled the scan, and all is well.
However, McAfee came with the computer, and I know for sure that it didn't use to cause problems.
Thanks go out to Irmoreno007 and PETEIOT

[tonton81]

if you add that folder to the exception list of mcaffee, it wont touch them ever again...

[TeckPete]

Yah I been using it for a few weeks with out any problems and it just stopped working one day it must have been an update from Macfee.

[caiobertacco]

I had the same problem, thank you all!!

[Kalai1227]

I am having the same problem in nodemcu 12E.I am using arduino ide 1.8.5 and getting this error again and again.i have tried all possible things but it failed.The error is
Archiving built core (caching) in: C:\Users\KALAID~1\AppData\Local\Temp\arduino_cache_744989\core\core_esp8266_esp8266_nodemcuv2_CpuFrequency_80,FlashSize_4M1M,LwIPVariant_v2mss536,Debug_Disabled,DebugLevel_None____,UploadSpeed_9600_0be5937afd45902e722a34277baa72a9.a
Sketch uses 247063 bytes (23%) of program storage space. Maximum is 1044464 bytes.
Global variables use 32868 bytes (40%) of dynamic memory, leaving 49052 bytes for local variables. Maximum is 81920 bytes.
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed

[Kalai1227]

please help to sort the above issue

[lrmoreno007]

This is the most important message: error: espcomm_open failed
Check that you have drivers for your board and your OS is detecting it.

Read this:
https://arduino-esp8266.readthedocs.io/en/latest/faq/a01-espcomm_sync-failed.html#initial-checks
1.- Arduino IDE is unable to open your serial port. Check if you have selected port where your module is connected to.

And you have selected 9600bauds, select 115200 for a faster upload, it's a safe speed.

It's a very basic question, somebody read something?

[Kalai1227]

I have tried this one but getting same error