adb can't detect Sony Xperia s although I installed driver

Question

I want to use my Xperia S for debugging, so I followed the OEM USB Drivers instructions step by step but still not work, I didn\'t find "Android Composite ADB Interface

Answer 1

The solution was to update the drivers using PC Companion. Before that I tested the following things: 1)I have the system running on Windows 8 and the problem has nothing to do with Mass Storage or MTP mode.

• In the Control Panel> Device Manager> Other devices, I found that the android driver was not found.
• I tried the manual installation of drivers which did not work. I
  checked the command line tool git bash to check if the android
  device was connected using the command adb devices. It did not show any device.

2) After the update of the device software, PC companion showed the device is up to date. I did not completely update the device where PC Companion asked for the upgrade and phone contacts have to be backed up.

3) Now when I checked the Device manager again, it shows the drivers are correctly installed.

4) adb devices in git bash show the device number and name

adb debugging works then