IDE Port Problem

I have been using 1.8.5 for a long time with few problems. Yesterday Microsoft did a large update to my Windows 10 machine and now the IDE is having problems finding the correct port. I plug in my project to port 4 and can access it via the serial monitor. But when I try to upload my sketch, I get the response shown below. Tried different ports and always get the same kind of response. Power cycling the PC made no difference.

I used Device Manager and it said I have the best driver. Anyone else having this problem? Suggestions?



Using library Wire at version 1.0 in folder: C:\Users\rgspa\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.6.21\libraries\Wire Sketch uses 17728 bytes (61%) of program storage space. Maximum is 28672 bytes. Global variables use 457 bytes (17%) of dynamic memory, leaving 2103 bytes for local variables. Maximum is 2560 bytes. Forcing reset using 1200bps open/close on port COM4 PORTS {COM1, COM4, } / {COM1, } => {} PORTS {COM1, } / {COM1, COM7, } => {COM7, } Found upload port: COM7 C:\Users\rgspa\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino9/bin/avrdude -CC:\Users\rgspa\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino9/etc/avrdude.conf -v -patmega32u4 -cavr109 -PCOM7 -b57600 -D -Uflash:w:C:\Users\rgspa\AppData\Local\Temp\arduino_build_214671/balloon16.ino.hex:i

avrdude: Version 6.3, compiled on Jan 17 2017 at 12:00:53 Copyright (c) 2000-2005 Brian Dean, Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "C:\Users\rgspa\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino9/etc/avrdude.conf"

Using Port : COM7 An error occurred while uploading the sketch Using Programmer : avr109 Overriding Baud Rate : 57600 avrdude: ser_open(): can't open device "\.\COM7": The system cannot find the file specified.

avrdude done. Thank you.

Which board? It’s a 32U4 based on by the looks of it.