So head over to Developer Options and do it right away. If the ADB devices command simply returns the List of devices attached keywords, without any code, then this means you haven’t enabled USB Debugging.However, if you are having any trouble, kindly go through the below section in which the major issues and their associated fixes have been discussed. So here is how you could enable both of them. The reason? Well, USB Debugging creates a debug bridge between your device and PC and hence provides a platform to execute these commands. Until you do so, you wouldn’t be able to execute any ADB Commands using the ADB and Fastboot tools. With that said, you would also have to Enable Developer Options and USB Debugging on your Android device. These types of commands are mostly used to flash IMG or zip files, formatting system partition and other such activities. On the other hand, Fastboot commands only work when your device is in bootloader mode. They could be used to boot your device to recovery/bootloader menu, install APK among other things. The former commands could only be used when your device is switched on. Just to make things clear, ADB and Fastboot are entirely different in their purpose. Once done, you could then easily execute any ADB and Fastboot Commands. ADB and Fastboot Tools, part of the Android SDK and Platform Tool, are used to create an Android Debug Bridge between your Android device and PC.

Adb fastboot installer windows