Hi all !

I'm using Visual Micro in VS 2015 (community, Version 14.0.25425.01 Update 3) and everything is fine, thank you very much for this tools which is so great !

But recently I faced a problem with Arduino Micro, uploading doesn't work. Here is what I get in the output window :

Uploading 'TestUpload' to 'Arduino/Genuino Micro' using 'COM55'
Uploader started for board Arduino/Genuino Micro
Upload method will be: bootloader
Uploading via Bootloader
Error attempting to reset the microcontroller on port COM55
Unable to 'touch' hardware serial port: COM55. Now assuming selected port is bootloader port. This might still fail, have you got the correct board selected?
PORTS {COM56,COM55} / {COM56,COM55} => {}
PORTS {COM56,COM55} / {COM56,COM55} => {}
... Many lines like those...
PORTS {COM56,COM55} / {COM56,COM55} => {}
C:\Program Files (x86)\Arduino\hardware\tools\avr\bin\avrdude -V "-CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf" -v -patmega32u4 -cavr109 -PCOM55 -b57600 -D Upload.ino.hex:i"
Upload failed
avrdude: Version 6.0.1, compiled on Apr 15 2015 at 19:59:58
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch
         System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"
         Using Port                    : COM55
         Using Programmer              : avr109
         Overriding Baud Rate          : 57600
avrdude: ser_open(): can't open device "\\.\COM55": Accès refusé.
avrdude: ser_send(): write error: sorry no info avail 

("Accès refusé" means in French : "access denied")

I can't understand why, I've already tried this :
- Reboot everything
- Change Arduino Micro and USB cable
And knowing that :
- With the Arduino IDE (1.6.11) it works !! I can upload !
- With an Arduino UNO it works with Visual Micro.

Thank you for your help...

Hi !

That's very strange ! Today it's working I've changed nothing since my last post : my Visual Micro was already up to date (1609.20.0) and I just set "upload verbose" in the arduino ide.

Even if it's working I post the output, maybe you will se something. Anyway thank you for your answer !

Uploading 'BlinkySD' to 'Arduino/Genuino Micro' using 'COM58'
Uploader started for board Arduino/Genuino Micro
Upload method will be: bootloader
Uploading via Bootloader
PORTS {COM58} / {} => {}
PORTS {} / {COM59} => {COM59}
C:\Program Files (x86)\Arduino\hardware\tools\avr\bin\avrdude -V "-CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf" -v -patmega32u4 -cavr109 -PCOM59 -b57600 -D SD.ino.hex:i"
avrdude: Version 6.0.1, compiled on Apr 15 2015 at 19:59:58
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch
         System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"
         Using Port                    : COM59
         Using Programmer              : avr109
         Overriding Baud Rate          : 57600
         AVR Part                      : ATmega32U4
         Chip Erase delay              : 9000 us
         PAGEL                         : PD7
         BS2                           : PA0
         RESET disposition             : dedicated
         RETRY pulse                   : SCK
         serial program mode           : yes
         parallel program mode         : yes
         Timeout                       : 200
         StabDelay                     : 100
         CmdexeDelay                   : 25
         SyncLoops                     : 32
         ByteDelay                     : 0
         PollIndex                     : 3
         PollValue                     : 0x53
         Memory Detail                 :
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           eeprom        65    20     4    0 no       1024    4      0  9000  9000 0x00 0x00
           flash         65     6   128    0 yes     32768  128    256  4500  4500 0x00 0x00
           lfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
           hfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
           efuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
           lock           0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
           calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00
           signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00
         Programmer Type : butterfly
         Description     : Atmel AppNote AVR109 Boot Loader
Connecting to programmer: .
Found programmer: Id = "CATERIN"; type = S
    Software Version = 1.0; No Hardware Version given.
Programmer supports auto addr increment.
Programmer supports buffered memory access with buffersize=128 bytes.
Programmer supports the following devices:
    Device code: 0x44
avrdude: devcode selected: 0x44
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.00s
avrdude: Device signature = 0x1e9587
avrdude: safemode: lfuse reads as FF
avrdude: safemode: hfuse reads as D8
avrdude: safemode: efuse reads as CB
avrdude: reading input file "
avrdude: writing flash (9666 bytes):
Writing | ################################################## | 100% 0.78s
avrdude: 9666 bytes of flash written
	The upload process has finished. via 'COM59'
avrdude: safemode: lfuse reads as FF
avrdude: safemode: hfuse reads as D8
avrdude: safemode: efuse reads as CB
avrdude: safemode: Fuses OK (H:CB, E:D8, L:FF)
avrdude done.  Thank you. 

Ok, thank your for this information !