I was able to connect android phones as a MTP device a few weeks ago. Then, I started to use my xperia z3c as an emulator in Android studio. Now i cant reach my folders on computer by connecting with MTP. My OS is Windows 8.1 . I tried many ways to solve it, uninstall the drivers etc. but i couldn't solve. I tried to connect with USB debugging but again no connection. I can use my device in android studio as an emulator, when i connect my phone with USB cable i can hear the sound that approves that phone is connected also i can see my device on device manager under the title of unknown devices and its name is D8503(Sony's offical name) Unfortunately i couldn't any android phone via MTP connection. When i tried on another pc, it works well.
Thanks.