Android Studio DDMS can't open /data folder in an emulator phone

Update

Can't remember whether it's from Android Studio 3.0 or later but if you have downloaded AS 3.3+, you'll find the tab on bottom right corner called Device File Explorer, which lets you to see and easily get the data of your app without rooting.

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Opening as Administrator didn't help but rooting the phone did worked, and no I'm not lowering my SDK version.

Open cmd and go to C:\Users\{User}\AppData\Local\Android\Sdk\platform-tools or to the folder location and type cmd at the address bar.

Whether you're super user or not can be determined by $:

C:\{User}\...\platform-tools>adb shell
generic_x86:/ $ exit

To have su/root privileges type adb root and exit:

C:\{User}\...\platform-tools>adb root
generic_x86:/ # exit

Next run the Android Device Monitor to extract the data.

To turn off root type adb unroot.

Even after running Android Studio as administrator if you can't access data/data folder, try using API 23 or lower for you emulator device.