Error: "Dex file has invalid header" during Android Studio .apk build

user_12203709 0
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during my approach to build the latest version off my webview app I got an error:

Error: C:\Users\{user}\Documents\AndroidStudio\{appName}\app\build\intermediates\transforms\dexBuilder\release\104\de\mdlmlr\{appName}\R$string.dex, Dex file has invalid header

During the previous builds, this error never occurred but during the latest my pc once got stuck (whole OS) and I had to reboot it manually. Maybe this caused this error. I couldn't find any help yet... Thanks!

apk android-studio dex android
1 Answers

First build->Clean project

Then build->Rebuild project

Click here to see the steps

that will work for most cases

but in case that didn't work you have to update Gradle

I clicked "update" in the below pop up and that works for me

update Gradle popup

user_134805370
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