Jarsigner is not recognized internal or external command

1. Go to My computer -> right click -> system properties ->select environmental variables ->Edit Path -> add your jdk/bin path and select ok. The sample jdk path is as shown below.

C:\Program Files\Java\jdk1.8.0_211\bin

*if this not work then

2. In command prompt set the path by using the below command

set PATH=C:\Program Files\Java\jdk1.8.0_211\bin

now the path is set now you can use the jarsigner

If the above step does not work, copy the unsigned-release-apk.apk file and keystore file in C:\Program Files\java\jdk_version\bin\ and run cmd as an administrator and navigate to C:\Program Files\java\jdk_version\bin\

Now your jarsigner will work successfully.

Solution: Add android jdk bin folder to your path in environment variables.

Instructions:

1- Right click on "This PC" > right-click Properties > Advanced system settings > Environment Variables > select PATH then EDIT.

2- Add your jdk bin folder path to environment variables, it should look like this:

"C:\Program Files\Java\jdk1.8.0_40\bin".