If you are running a keytool command keytool -list -v -keystore C:\Users\arun\.android\debug.keystore -alias androiddebugkey -storepass android and getting an error 'keytool' is not recognized as an internal or external command If you are using any other commad like java,javac , etc.. and getting an error " is not recognized as an internal or external command" you can also use this same steps you are getting this error because keytool.exe , executable file which exists in the bin directory of your JDK is not added to Path in your Environmental variables. To resolve this issue 1 .first we need to find the bin Directory of our jdk Usually this will be in C:\Program Files\Java\jre1.8.0_221\bin (jre1.8.0_221 - change this to your latest version , ). you can see keytool.exe file in the bin directory . (If you installed jdk in a different directory Find your Jdk installation folder and use that path....