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I'm a bit new to flutter and when I want to generate an apk with "Flutter build apk" I get the following error:

Execution failed for task 'app: packageRelease'.
com.android.ide.common.signing.KeytoolException: Failed to read key test from store "C: \ path \ key.properties": Invalid keystore format

Thank you

Dani Nuñez
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1 Answers1

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It's probably a conflict between Java versions used by Flutter and Keytool. At least in my case it was.

1. Check Flutter JDK version

flutter doctor -v

It'll be something like Java version OpenJDK Runtime Environment (build 1.8... 1.8 means Java 8.

2. Check your computer's JDK version

java -version

In my case, it was Java 16, so I had to remove it (Instruction) and install OpenJDK 8.

3. Install OpenJDK

MacOS: https://formulae.brew.sh/formula/openjdk@8

Windows: Instruction

4. Update JAVA_HOME

MacOS:

/usr/libexec/java_home -V  // this will show you jdk versions
export JAVA_HOME=`/usr/libexec/java_home -v 1.8` // specify your version here

Windows: Instruction

5. Re-create the keystore

Remove .jks file and create a new one: https://flutter.dev/docs/deployment/android#create-an-upload-keystore

oblomov
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