Finding the Android debug bridge after upgrading SDK
The ADB.exe (and its 2 associated DLL files) were formerly stored in the SDKtools directory. This directory was correctly set up in the PATH environmental variable. However, with SDK revision 9, the adb files are now in the platform-tools directory.
There are 2 fixes:
1. add the new directory path to the PATH environmental variable.
2. Copy the 3 adb files from the “platform-tools” directory to the “tools” directory
Now you are back in business.