5D Mark IV - Error 40 when switching on off
I have a Canon 5D Mark IV which is a month old and since yesterday an "error 40" pops up every time I switched the camera on or off. After about 5 - 7 seconds the error disappears and then I can I use the camera again.
On the LCD Display the camera notifies me to switch off and reinsert the battery . Tried it. Does not work. Changed batteries and does not work.
However I found a temporary fix by going through the camera settings and switching off " Automatic Sensor Cleaning when switching On and Off". If sensor cleaning is switched off the error does not come.