Based on a real experience I had on December 30, 2016. I later found out I simply had one of the files open that it was trying to write to.
I used some code from the actual automation to generate this. A co-worker did a double-take when he saw my screen output the text at the very bottom.

For anybody interested, here's the actual source code for this comic, without any actual work done(put an at sign before the first echo, I didn't want to risk tagging a user):

echo off
color 0C
echo Doing all your work for you
echo.
echo ...
echo ...
echo ...
set loop=0
:loop
echo Access denied
set /a loop=%loop%+1
if "%loop%"=="10" goto next
goto loop
:next
timeout /t 10 >nul
cls
color F0
echo.
echo Closing pod bay doors
echo.
timeout /t 1 >nul
echo Turning off life support......
timeout /t 10 >nul