Android studio 3.2.1 ArtifactResolveException: Could not resolve all artifacts for configuration ':classpath'

100% Solution. Just turn off the Toggle Offline Mode .

On the top right side of the Window .

Click on Gradle 2nd number option(just near of Setting option) click on it then you will be able to do work continue sally.

As you can see the image

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In The Right Side of the Android Studio, You can See Gradle option just click it and you will see a screen which is given below.

Gradle can be offline. If offline, you should do it online.

Screenshot


I had this problem also. Tried all the suggestions, but didnt help. The problem was in offline/online mode as other stated but you have to also check the compiler settings. Make sure there is no --offline flag

Preferences -> Build, Execution, Deployment -> Compiler

( Menubar 'File' button, 'Settings' menu option, 'Build, Execution, Deployment' menu twisty, 'Compiler' submenu )

On Command-line Options: --stacktrace

not

--offline --stacktrace