Error compiling for board Arduino/Genuino Uno

Question

I am getting the following error message when compiling a program on my Arduino IDE. This does not happen when compiling the given example programs in the IDE.

The error message is as follows :

Arduino: 1.8.5 (Windows 10), Board: "Arduino/Genuino Uno"
C:\Program Files\Arduino\arduino-builder -dump-prefs -logger=machine -hardware 
C:\Program Files\Arduino\hardware -tools 
C:\Program Files\Arduino\tools-builder -tools
C:\Program Files\Arduino\hardware\tools\avr -built-in-libraries 
C:\Program Files\Arduino\libraries -libraries 
C:\Users\mahim\OneDrive\Documents\Arduino\libraries -fqbn=arduino:avr:uno -ide-version=10805 -build-path 
C:\Users\mahim\AppData\Local\Temp\arduino_build_361527 -warnings=none -build-cache 
C:\Users\mahim\AppData\Local\Temp\arduino_cache_227236 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=
C:\Program Files\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=
C:\Program Files\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=
C:\Program Files\Arduino\hardware\tools\avr -verbose 
C:\Users\mahim\OneDrive\Documents\Arduino3円potpass3円potpass.ino
readlink 
C:\Users\mahim\OneDrive\Documents\Arduino3円potpass3円potpass.ino: The system cannot find the file specified.
Error compiling for board Arduino/Genuino Uno.

Answer 1

This is a known incompatibility between the Arduino IDE and Microsoft OneDrive. A fix should be available soon; in the meantime, move your Arduino sketches out of the OneDrive folder.

Answer 2

Following on from duskwuff's answer, the issue with OneDrive folders has been resolved as of version 1.8.6.

https://www.arduino.cc/en/Main/ReleaseNotes

ARDUINO 1.8.6 2018年08月23日

[ide]

• Updated arduino-builder to 1.4.0:
  • parallel build (improve compile speed)
  • better reuse of already compiled files
  • Windows: fixed build for sketch stored under OneDrive cloud folders

Simply update to a newer version of the Arduino IDE and you will be able to compile and upload your sketch.