If adb doesn't see your Android device [Windows]

Yesterday I was trying to write an application for my Nexus 5 and stuck when adb shown me empty list of connected devices. What to do?

1. Install Google USB driver (read about driver here)
2. Enable Developer Options for your Android device. Usually you need to tap about 10 times in "Settings - About Phone" on "Android Version" item.
3. Plug in USB cable into your device and check "adb devices" output
4. If you see empty output, open Device Manager in Control Panel, right-click "Android ADB Interface" and delete. When dialog asks, check the "Delete drivers for this device" and hit "OK". It must look like this:

5. Unplug your device. 
6. Reinstall Google USB driver.
7. Plug in USB cable into your device.
8. On my Nexus 5 there was confirmation prompt for USB debugging. Allow to debug.
9. Happy coding!