Error compiling for board Arduino/Genuino Uno.

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

Cannot create temporary file in C:\Users\MKButan\AppData\Local\Temp: Permission denied

exit status 3
Error compiling for board Arduino Duemilanove or Diecimila.

Now iam getting the same thing in Desktop also
Please Help to solve the Problem

Build options changed, rebuilding all
C:\Users\MKButan\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.6.21\cores\arduino\hooks.c:1:0: fatal error: can't open C:\Users\MKButan\AppData\Local\Temp\ccjHKI6T.s for writing: Permission denied

/*

^

compilation terminated.

exit status 1
Error compiling for board Arduino/Genuino Uno.

Dont know what to do???