USB Connection not working in Lumia 520

[WPCentral Question]

I have connected my Lumia 520 with my computer using the data cable provided in the pack as usual.When I try to copy any file to my computer "Access is denied" message props up.I can still browse all the files on my phone.This has happened suddenly as even yesterday it was working.Please suggest what is wrong and how can I fix it.

 

[pankaj981]

Try removing the device and reinstall it again