Prior to actually updating my old adb.exe fastboot.exe and USB drivers I was unable to get a adb shell to the SGS5 I was always getting "offline" but my device would show up just fine.
DOWNLOAD (To download off GoogleDrive go to - File > Download)
Once you download the pack, unzip, install the USB Drivers and reboot. You will then be able to use the adb.exe provided to access your SGS5 but the first adb shell you will get prompted on the device to allow the PC you are using so please check the screen.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?