Android Studio 3.2 sync failed after update

Question

I updated from Android Studio 3.1.4 to 3.2. Now sync fails with the error message

Sync finish event has not been received

How can this be fixed? Invalidate Caches/Restart did not help.

The ida log shows the following warning:

java.lang.NoClassDefFoundError: org/gradle/wrapper/WrapperConfiguration
    at org.jetbrains.plugins.gradle.util.GradleUtil.getWrapperConfiguration(GradleUtil.java:92)
    at org.jetbrains.plugins.gradle.service.GradleInstallationManager.getGradleHome(GradleInstallationManager.java:208)
    at org.jetbrains.plugins.gradle.service.GradleInstallationManager.doGetGradleHome(GradleInstallationManager.java:194)
    at org.jetbrains.plugins.gradle.service.GradleInstallationManager.getGradleHome(GradleInstallationManager.java:129)
    at org.jetbrains.plugins.gradle.GradleManager.lambda$getExecutionSettingsProvider$2(GradleManager.java:150)
    at com.intellij.openapi.externalSystem.util.ExternalSystemApiUtil.getExecutionSettings(ExternalSystemApiUtil.java:732)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.doCreateFacade(ExternalSystemFacadeManager.java:201)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.doGetFacade(ExternalSystemFacadeManager.java:177)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager.doInvoke(ExternalSystemFacadeManager.java:132)
    at com.intellij.openapi.externalSystem.service.ExternalSystemFacadeManager$MyHandler.invoke(ExternalSystemFacadeManager.java:269)
    at com.sun.proxy.$Proxy148.getResolver(Unknown Source)
    at com.intellij.openapi.externalSystem.service.internal.ExternalSystemResolveProjectTask.doExecute(ExternalSystemResolveProjectTask.java:84)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:163)
    at com.intellij.openapi.externalSystem.service.internal.AbstractExternalSystemTask.execute(AbstractExternalSystemTask.java:149)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$3.execute(ExternalSystemUtil.java:550)
    at com.intellij.openapi.externalSystem.util.ExternalSystemUtil$5.run(ExternalSystemUtil.java:647)
    at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:750)
    at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:157)
    at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:580)
    at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:525)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:85)
    at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:144)
    at com.intellij.openapi.progress.impl.CoreProgressManager$4.run(CoreProgressManager.java:395)
    at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:305)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.gradle.wrapper.WrapperConfiguration PluginClassLoader[org.jetbrains.plugins.gradle, 181.5540.7.32.5014246] com.intellij.ide.plugins.cl.PluginClassLoader@5f6fe2bb
    at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:63)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

Answer 1

The only solution I found was to remove Android Studio and reinstall Android Studio 3.2 from scratch.

Answer 2

EDIT

The problem might be different from OP but this is also a new issue in AS 3.2 which gives you Gradle sync error

I had Gradle sync error for the last couple of days after I updated to AS 3.2 and in my case, the problem was one of my library modules contain the following in Manifest.xml

 <uses-sdk
            android:minSdkVersion="15"
            android:targetSdkVersion="27" />

and the solution was to remove 'uses-sdk' (in AndroidManifest.xml file) in ALL the modules in your project.