Can't access filesystem from PC anymore Starting a couple of weeks ago.. I can't access the file system from my PC on my Samsung tablet..

When connecting the tablet via USB to my PC I never get the dialog box where you choose whether  or not the PC can have access to the file system

When connecting my Samsung phone on the same USB port and using the same USB cable it works fine!?

Have also tried to reset the tablet..
I had the same issue with my phone. The USB cable was fine (I checked it with another phone like you) but when I tried it with my phone, it only charged my phone without showing any option for connection. It turned out that the usb port (usb connector) of the phone was damaged. Out of the two usb data wires (not the power wires), one was broken. I would therefore  suggest you to get your tablet's usb port (connector) checked.