I have the same problem and I have tried everything including wiping and rebooting my computer (it needed to be wiped anyway) then I used a whole different board and different computer and it is still broken.
please give some actually helpful advice (not this)
anbu123:
Are you using arduino TX and Rx pins? What project?
Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Board: "Arduino/Genuino Uno"
Sketch uses 1610 bytes (4%) of program storage space. Maximum is 32256 bytes.
Global variables use 184 bytes (8%) of dynamic memory, leaving 1864 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't open device "\.\COM5": Access is denied.
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v
what does it mean "Access is denied"
what is denying my access!
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.