Why does my phone not allow me to move certain files to my sd card?

[AC Question]

why does my phone not allow me to move certain files to my sd card?

It says, "Unable to move due to unknown reason." And then it does nothing

 

[B. Diddy]

Re: why does my phone not allow me to move certain files to my sd card?

Welcome to Android Central! Which phone, and which Android version? What app are you using to try to move the file? The increased SD restrictions with KitKat mean that an app has to have specific permissions to access the SD card, so if the app you're using doesn't have that permission, then it can't use the SD.